IGCSE Physics Revision: Unit 4 Electricity & Magnetism | for Cambridge IGCSE 2023 Syllabus

[@maryamaurangzaib7176]

Electric charge 3:58 Electric field 5:43 Charging insulators by rubbing 8:11 Charging conductors by induction 9:26 The electric circuit 13:20 Circuit diagram 15:39 Voltage, current and resistance 16:21 Measuring voltage and current 22:53 Ohm's law 23:48 Resistance of wires 29:27 Calculating electric power 31:05 Kilowatt-Hour 34:35 Resistor types 38:29 Diode 42:00 IV Graph 46:57 Series connection 48:55 Parallel connection 52:45 Advantages of parallel circuit 57:32 Potential divider circuits 58:48 Mains electricity 1:05:01 Fuses 1:06:52 Circuit breaker/trip switch 1:09:50 Earth wire 1:13:08 Magnetism 1:14:30 Magnetic field 1:16:03 Magnetic field of conductors 1:19:23 Right hand grip rule - wire 1:20:42 Magnetic field of solenoid/coil 1:22:17 Right hand grip rule - coil 1:23:33 Relay 1:24:50 Speakers 1:25:54 Megnetizing and demagnetizing 1:27:08 Force on a current carrying conductor 1:35:06 Fleming left hand rule 1:36:53 DC motor 1:38:50 Electromagnetic induction 1:41:03 Lenz's law 1:43:32 AC generator 1:49:41 Transformer 1:52:09 Transmitting Electricity 1:56:25 Transformers - power 2:00:10

[@AliBirierIGCSE]

tysmmmm

[@fnknwr7]

thank you very much!

[@muhammadtaha8894]

Must say it was extremely helpful

[@hassanfareed7269]

Thanks alot ❤

[@MattZhang-xx6lp]

thank you *1000000 times

[@smithgretzky5989]

This great man did what a school tries relentlessly to do in 2 years, in literally half a days' worth of time.

[@atwumer]

my exam’s in an hour

[@straight.2503]

@@atwumer how'd it go ?

[@atwumer]

@@straight.2503 really good, hope i get an A*

[@iloveyoumorethanthemoon]

@@atwumer what did you get and can you please tell me how you studied

[@atwumer]

@@iloveyoumorethanthemoon i got an A* Alhamdulilah

[@hafsausman4725]

13:17 circuit 16:22 voltage, current, resistance 34:32 kilowatt hour 46:52 IV graphs 48:47 resistors in series 59:18 potential divider circuit 1:25:11 relay 1:38:45 dc motor 1:40:52 electromagnetic induction 1:43:51 lenz's law 1:47:36 angle at which current is cut effects 1:49:36 ac generator 1:52:15

[@ninjaplayz8538]

ok thanks

[@donutman8197]

legend

[@WHYISEVERYHANDLEALREADYTAKEN9]

TYSM!!

[@Smalllazykitten]

God Bless You

[@Saif-cc5jq]

Good luck to the first batch including myself that's doing space physics this year. Unarguably the batch with the most odds stacked up against them.

[@Hoellz]

Space physics can't be the biggest deciding factor though, can it?

[@Saif-cc5jq]

@@Hoellz space phy new unit, new additions to all syllabuses, shitty timetable, new bio style que. Need I say more ?

[@Hoellz]

We gotta cope

[@nysanayeem4106]

istg we are not only gonna get non lenient examiners but also new editions in the syllabus. we are the unluckiest batch on earth

[@user-cu3fh5hn4t]

@@Saif-cc5jq wdym by new style of questioning for bio??

[@huskyfan201]

All the best to this year's IGCSE candidates, including myself. Space physics is my only favourite chapter for the whole Physics syllabus. I am personally glad it is added to the syllabus (better than having barometers and manometers)

[@localbookworm5384]

Honestly yes like I was so confused when I tried to understand things like logic gates and manometers

[@FatimaFarukh-i8y]

frrr space physics is soo interesting, so glad i was added

[@parthaarnav3469]

00:04 Changes in the IGCSE Physics syllabus for 2023 02:15 Electricity and Magnetism 06:52 Understanding field strength and uniform fields 09:31 Charging a metal by induction 14:41 Resistance slows down charges, releasing electrical energy into light bulb 17:20 Voltage has two names: potential difference and EMF. 21:46 Materials with high resistance have lower current flow, while low resistance allows for higher current flow. 24:00 Maintaining constant resistance is crucial in electrical circuits 28:24 Resistance affects current, not voltage 30:39 Power calculation in electricity using voltage and current. 35:10 Calculating energy cost based on consumption in kilowatt hours 37:14 Understanding energy expenditure and costs in electricity consumption 41:36 Diodes allow current to flow in one direction only. 43:43 AC and DC currents explained 48:22 Series and parallel connections affect resistance, current, and voltage. 50:34 Voltage distribution in series and parallel circuits varies based on resistance 55:01 Explanation of voltage sharing in series circuits 57:11 Advantages of connecting components in parallel 1:01:16 A variable potential divider controls the voltage across a component. 1:03:27 Safety precautions and control of voltage in electrical circuits. 1:08:06 Fuses and circuit breakers protect against current overloads. 1:11:35 High current protection and earth wire in household electricity 1:16:02 Magnets have a magnetic field just like electricity with electric fields. 1:18:15 Compass plotting method for determining magnetic field direction 1:22:29 Electricity can also create magnetism 1:24:37 Electromagnet applications: relay and speakers 1:28:42 Magnetically magnetizing steel efficiently without hammering 1:30:42 Magnetizing and demagnetizing methods 1:34:47 Force on a current carrying conductor due to interaction with a magnet. 1:36:51 Understanding Fleming's Left Hand Rule 1:41:15 Moving a wire through a magnetic field generates electricity through electromagnetic induction. 1:43:20 Understanding Fleming's Right Hand Rule in Electricity Generation. 1:47:59 Movement of wire or coil in a circle generates alternating current 1:50:01 Human-generated electricity through exercise 1:54:39 Step Down Transformer reduces voltage for safe transmission. 1:56:51 Using a Step up Transformer to decrease current and reduce heat in cables.

[@AwesomeDooshi]

I actually have started loving physics because of your videos. Thank u 🙏

[@devikas.9088]

you should solve past paper questions too, that would be fun to watch!

[@cityentirely5168]

Frrr

[@nevaehjol9319]

sir u explained a concept that I struggled with for two years, why didn't I know you earlier

[@khizerahmad999]

Very good explanation. Not long, but very well explained. This video helped me to prepare for my school examination for physics.

[@cooller355]

oh my days, god bless u. My teacher is so trash at explaining and u literally made me understand everything in one video, i love you. ❤❤❤❤❤❤ i will subscribe and rely on ur videos, and i will get a 9 on my igcse cuz of u. ur students r so lucky

[@fanta.k.camara6537]

Did you get a 9

[@EditsCR7AndRealMadrid]

Congrats, I mean if u got 9

[@ZeeKho]

Don't ever disrespect your teacher no matter how bad they teach you don't call him/her trash they must be working hard and giving full from their side

[@maahishah773]

Thank you soo much sir!!! You made this topic 10 times easier to understand. Once I understood the concept, I started having a lot of fun in learning topic instead of thinking it was deadly and extremely difficult. It's all thanks to you!!

[@Adam-dn4bq]

I am amazed by your explaining Mr.Mohamed thank you so much

[@neha_reddy121]

I have my physics preboard in a week! You explained a chapter I had lots of doubts in so effectively. Thanks a bunch!

[@K3LV1NZ]

I have mine on wednesday next week and I was about to sacrifice this topic bc i didnt understand it and thanks to him i now fully understand it and btw if u dont mind was the physics paper hard?

[@shaizamaryam2002]

@@K3LV1NZhow did it go

[@K3LV1NZ]

@@shaizamaryam2002 imma give an overview, it was like my paper was on fire then my hand was on fire and then everything else was on fire and then i got cancer and died. Thats how it went (kinda hard)

[@shaizamaryam2002]

@@K3LV1NZ Damn I’m gonna appear in m/j 2025 and now I’m scared lol.But hope you get an A* dw

[@K3LV1NZ]

@@shaizamaryam2002 dont be scared bro just dont commit the same mistake as i did, i played the whole school year and studied the whole syllabus like 1 week before the exam, as long as you understand the syllabus fully one month before the exam u are goos

[@cappybaraeats]

omg no wonder i got so confused with the current direction stuff because like they literally said electrons but then the direction is the opposite?!?! like it was literally contradicting themselves... luckily i found you teacher omg i finally get it

[@abdullahalali2836]

you are a hero this will save a lot of time thank you!!!

[@Allahthesupreme1701]

This man is my first sight love because the way of the expression and teaching skills are remarkable best physics teacher in the world

[@centric145]

You are a life saver sir.Thank u a lot

[@AnnAnn-oj4ct]

Sir, you really are a life saviour !!! You just explained all at once in 2 hours which I've been struggling for two years... I'm so glad that I found you earlier before my final exams is getting close and you kinna make me love Physics now which I've been considering as my archenemy loll... Thankyou so much Sir! May God bless you Sir!

[@kxvld595]

tysm for your videos, honestly way too good we wrote our physics paper today variant 2 (p4) and it went great

[@muiisalvatore2955]

I just want to thank you so muchhh..... this channel helped me a lot .I never really liked physics but had to do it anyways and i finally finished today and i used ur videos to revise.Helped a ton !

[@purbitasaha930]

1:14:08 Magnetism

[@maryambint9973]

I literally hated magnetism as I couldn’t understand it, but now it’s so easy and everything’s clear. Really love the way you teach 🥰🥰

[@NoOne-m3f7d]

Same

[@inderbirsingh5463]

Sirrr, i have my mid term exams tomorrow and due to shifting schools, i am not done with the syllabus which is coming out in the exam, your videos helped me learn all of the concepts super fast. You are the third teacher i have met in my life so far who teaches physics with so much enthusiasm. Thanks a lot sir, u aint got the name mohammed ali for nothin. W

[@7tiax_shimndo10]

I must admit, you're an excellent Teacher!

[@simritnanda7395]

you are a phenomenal teacher and i am so grateful to be able to have access to your lectures, you make learning entertaining and effective. always keep teaching!

[@Spex07]

Thank you so much Mr Mohamed for such a detailed explanation, this solved all my queries.

[@xepherart2153]

thank you so much sir It helps with grasping the topics easily and developing an understanding which helps in revision or practicing in your terms Thank you so much !!

[@raramaisharmainechari1425]

You really are a genius Hats off to you

[@EditsCR7AndRealMadrid]

Thanks mister, like in school my teacher is bad, Im pre- IG though, we were studying these things at school, although Im the best in my class, I still understood almost nothing. But I heard about your channel from a friend who had the same problem before me, your videos really helped, especially this one. I will watch the next chapters' Videos too. EVERYBODY SHOULD SUBSCRIBE, AND MAKE THE PHYSICS A LOT EASIER

[@Piqaiso]

i am forever in your debt teacher. thank you for the great lesson

[@cappybaraeats]

im so angry at myself that i only found this channel now when Im literally having igcse phy exams in 4 days .

[@i_am_blue1619]

same but i found it in the morning of my exam

[@holycheeshus]

How did it got?

[@cappybaraeats]

@@holycheeshus this guy is amazing honestly I got A* for physics ❤️❤️❤️❤️❤️❤️

[@Mahmood0419]

@@i_am_blue1619me just 1 day before

[@jennie08._]

@@Mahmood0419 sameee

[@rufirizwan2542]

you make studying so fun, extremely glad i found your channel❤

[@omardoper8193]

jazakallah khair Mr Mohammed thank you!

[@NihalDevalapally-mj3pc]

Thank you so much for making these videos man. It helped me and my friends a lot and made our final paper very easy. I appreciate it man. One small recomendation, you should start making videos on past papers too.

[@anuvijay5683]

Thank you, sir. This helped me a lot. Sir, may I know if you take any online classes

[@AIDreams666]

Allah bless u brother v good media u have made mashallah i watched complete 3 hours. v impressed by your skill set, everyone watch this video i greatly recommend it and it has a special space in my lil tinsy binsy heart

[@tia1294]

Thank you so much for your precious time sir. I genuinely enjoyed the video while understanding all the concepts.🌷

[@ugyenthinley8742]

Hello sir, I have been enjoying your teachings 😊 everything you have explained in a very simple terms and comprehensible. I would like to request if you could also have a video on college physics 😊 would be very grateful. Thank you

[@MarvellousHarrison]

I literally wrote a mock today against next month exams and the last question you asked about why voltage is increased came out, and I just smiled thanking you so much in my heart. That was just one among the numerous other questions your videos helped me answer.

[@weetabix921]

Thnanks a lot.. great recap and revision before finals

[@Lord_Of_Demise]

27:33 and 27:38 "Whroom, Super Fast!" 😂

[@varunniilesh]

Mo Ali, I can't thank you enough! I have been struggling with physics, especially space and general topics, because of bad teachers, but your explanations made everything so clear and easy to understand. You stick to the syllabus without all the extra content that just confuses me, unlike my textbook. Plus, your funny jokes make learning so much more fun,your videos never get boring!! I have my exams next month, and I am aiming for an A* in physics, and if I get it, it’s all thanks to you! LOVE YOU TEACHER! Please consider making videos for A Level physics as well, It's going to be really helpful for me in the future. ♥🥰

[@prof-pras]

Me watching this video the 4th time to finally understand everything once and for all!!

[@al3firit]

You're a lifesaver !

[@AniqaRizwan-u1w]

Hello sir.Can you please tell explain how resistance and temperature are inversely proportional 40:06

[@langkahberjasa5802]

I love u u are too great sir ..I won’t send my son to international school anymore … because IT cost a lot of money .You are too ,Great keep IT up.

[@zade4545]

I recommend sending your son to the school. It can help build memories and increase his skills in various subjects.

[@Marony1142]

You seriously maybe physics soooo fun 😭😭 thank you so much!!!!

[@Mujiboy]

I am so glad you got recommended. Thanks for everything.

[@TZX_CLUTCH_FF]

The end peace was very satisfying😂 after making us use of so much brain bro said peace 😂. No joke bro literally taught better than schools.

[@Lord_Of_Demise]

4:25 Mo Ali getting excited about everything being charged 🤣 (Just a Joke btw, he is a great teacher)

[@hamzasalmann]

MashAllah sir, your english has improved drastically! Thank you for these amazing videos, super helpful

[@royalqueen7607]

a should be capital

[@hamzasalmann]

@@royalqueen7607 thank you

[@yunie7755]

his english was always good wdym?

[@Nofail2]

Wait hamza?!?!

[@hamzasalmann]

@@Nofail2 DAWG AINT NO WAY LMAOO

[@chiefchamp1841]

thank you sir. can you also please do a video on unit 3 : waves? it would be really helpful.

[@Hoellz]

wish granted

[@Why_did_YouTube_add_handles]

mr can you please do waves, they added a bunch of things about communications which i don't really understand. thanks a lot for this video, literally the only physics teacher i understand

[@thebestteam4267]

he did already

[@Why_did_YouTube_add_handles]

@@thebestteam4267 i wrote this comment before he did

[@igcseteen]

i.swear.to.god you have singlehandedly saved my physics grades. I just know that ill manage to get above B in physics JUST by watching your videos. I thought i was so done for electricity but you just saved my LIFE! sir, i seriously dont know how to contact you personally for thanking you, but omg thank you so so so much. Literally saved my day, my year, and my physics grades😭

[@mohsenelshazle7220]

My physics teacher could never w allah Thank you so much mo you are a hero for real

[@chothar8211]

Tr why did u say the higher the temperature the higher the resistor and the lower current in 48:38 even tho u said if the temperature is increased the resistance will decrease in mentioning the thermistor

[@bluednbfu5678]

In the graph, the resistor was a metallic conductor that's why when the temperature increased, the resistance also increased but before that he was talking Abt thermistors which are non metallic, which decrease the resistance as they gain temperature

[@Tristanlu789]

It is so damn helpful, it is extremely clear and a million times better than my teacher 😅

[@SpaceIntellect]

17:45 No need to scream brother!!!!!! keep up the good work

[@deanachang201]

can you please please please have IB physics videos? i love your videos thank you!

[@Lomash287]

OMG, THE LEGEND IS BACK!!

[@BunmiOMODELE-g6p]

you seriously helped my life in a series video that will make me pass IGCSE what teachers struggled to do in 6years

[@jeongie9351]

OMGGGGGGGGGG THANK YOU SO MUCH!!!!!!!!!!!! You saved my lifeeee

[@studygaming1552]

sir you are great

[@shaheerrehan474]

very nice video .........would like if you consider going live on youtube to explain toipics

[@Hello46446]

Thank You Very Much for you videos ❤

[@Itszzmeaisha]

Sir ur an amazing teacher and im really struggling with A level phy can you also make videos them?

[@whoknows2298]

sir, can you do a paper 6 revision before our igcse physics exams

[@reanimatorism]

you've literally saved my life

[@PsychWard666]

I was so stessed bcz of my exams were in two weeks and my syllabus wasn’t completed and this lecture HELPED SO MUCHH

[@MYPWithArko]

Thank you Mr. Ali! What I couldn't understand for 7 days was literally understood by me in 2 minutes.

[@Arab_Lanka]

Thank you so much 😊 you really helped me

[@hishamawudu7532]

Good video wish more people liked it

[@franOk]

i literally HATED physics, but ever since i came across your videos, I found this subject very interesting. Thank you so much!!

[@LiAndy-px7fj]

wow, when you said hit a like and subscribe, the subscribe button GLOWS

[@nooraluvsfood]

Best physics teacher everr

[@nooraluvsfood]

@maryamaurangzaib5960 nope next yr

[@OG_Shady]

can u pls give us this pdf Thanks a lot btw this is a life saver!!!

[@SaadKhan-jy1pk]

really respect the content it was clear and direct appericiate it

[@latetotheparty6398]

What happened to your old videos?? Can you repost them please they were literally just perfect the new videos are also great too

[@MuhammadYussre]

Mo, how do we change and measure current in a circuit

[@aditiroy2008]

Sir you deserve much more 🙏

[@makerAr-qj3mk]

This was so helpful 💓💓plz can u do for general physics unit 1🙏🙏

[@shamasshah4547]

its already done by him just click on his channel and you will find it there~

[@localbookworm5384]

He uploaded this video before ch. 1

[@Lhknvvnn78]

my final is in a month, thank you so much for this

[@adiaryofateen2239]

Thx w za help , 👍 👍 👍 👍 good luck 4 y'all tmro 🎉

[@Irshad5554]

Good explained topic my teachers also can't take his job.

[@richardmueller3396]

Thanks for that highly interesting lecture!

[@mettabojang1562]

THANK YOU SO MUCH! YOU MADE PHYSICS EASYYYYY

[@kehandezoysa357]

thank you sir

[@HYKANTUS]

first

[@thanos444.t]

can i get the ppt pls ty sm helped me so much

[@Fz_v7]

Waiting 🔜🔥🔥

[@NAMAN_S]

video starts at 3:30

[@zunairabintesakif3827]

It would be very helpful if u solve more past paper questions

[@AfrozaNadir]

best explanation!!!!

[@omarmukhtar1086]

Thanks a lot for the video, but sir why did you remove the newest vids😭😢

[@helix336]

literally the best teacher ever i passed last year because of you

[@ahmedlooo1914]

May god bless you youre a lifesaver!

[@hasnainali-kv7mx]

Please do unit 1 as well

[@Samburu-kn7ee]

It's already there

[@faisalmehmood608]

Why we use ac supply in transformers,as ac current demagnetize material?

[@boblocdoge6581]

mashallah mohammad bhaijan

[@Brenda-d5g]

you're saving my life...thankyou :)