RESISTANCE RESISTIVITY | CHAPTER 13 | CURRENT ELECTRICITY | CLASS 12 | 100% UNDERSTANDING

[@Nadeemabbasnasir]

Sir words ni hain mery pas..your method of delivering lecture is outatandin superb sir

[@Ivan-so8ru]

Sir Your the best teacher of physics i have ever seen in my life

[@kevinkotigala1590]

Sir your method of teaching is very good

[@mahimuskan9283]

Thank you 😊 sir God bless u

[@abdullahsani3855]

Good to have ur lectures now a dayz where academies are closed and the suituation is worst

[@hammadmanzoor1073]

At 6:00 ... Kia Resistance R1

[@its_shadow_91]

Sir mazrat ky sath i think ap ny lecture mei jis jga depends of resistence & resistivity btaya hai to R¹ < R² < R³ aesy ni aye ga kia? bcz R directly relate to L So L increasing then resistance also increase Sir kindly ans zaroor kriye ga 🙂 . . Baqi no words for ur effort & way of teaching 😘

[@shahzadkhanshahzadkhan6784]

Assalam O Alaikum sir R directly proportional hay lenght k to copper waly example mein to first waly ka resistance 2nd one se less hona chaheyi R1

[@younisali2525]

Mashallah sir so precious thanks alot sir

[@mirzashahrooztv9355]

Thanks sir Apky lectures buht helpful or conceptual hoty hein Allah pak apko umer draz atta farmaiy Ameen!

[@nouman6998]

R3>R2>R1 this will be the correct sequence as resistance is directly proportional to lengtth

[@noorfatima7953]

g good

[@jeonskookiee8366]

Thank u for writing this I was so confused 😭✨

[@fahadlodhi3744]

Amazing............u r the best teacher.....

[@mirzaali9296]

Jazakillah… so clear…. Allahumma barik fi…🤲🏻🥰

[@aqsazaheer4049]

out standing you have very stronge gip. I try my best to follow you your contents which you covered fantastically

[@mariaawan3213]

your method of teaching is excellent and your presantation is so good neat and clean

[@ilyasali9898]

well done me jitna bhi thnks krun qm hai .... jazak allah ... thank u ... ayy wallah...

[@FriendsPhysics]

JazakAllah

[@ruqqia_arjumand]

sir u r the special blessing of Allah ✨

[@anayahaseeb4339]

Sir aapki jitni tareef ki jaye kam hai 💕💕💕💕

[@UsmanShani]

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[@hafsanaeem6254]

outstanding sir really greatfull NEEED SOLUTION OF 12.8 EXAMPLE FROM CHAPTER 12 OF KPK TEXTBOOK PHYSICS 2ND YEAR

[@zainabmehsood4156]

Thanks sir you are the best teacher in the world

[@hooriyaali708]

perfect method of teaching

[@eshaalansari4726]

what effect on the value of temperature coefficient of resistivity by increasing temperature when resistance is increasing?

[@salehaasif9236]

It was just outstanding 😊 Mashallah your teaching method is so best ❣️✌️

[@ahmadmughal1772]

Please us colar mic for better sound quality.... 😊

[@hammadmanzoor1073]

I understood . Thank You Sir

[@javedkhan-um8lf]

Mashallah .Allah bless you with many of his blessings.

[@fangirlofturkey1704]

Sir you the best Your way of teaching..your expressions your Eyes 👀 outstanding sir

[@manosheikh8910]

Amazing Lecture😇❤

[@ridabatool553]

Great WOrk Sir!♥️ YOur way Of teaching is the best.♥️🤩 Thankyou Sir♥️

[@abbasjaffri]

Sir u have done a great job

[@Burkiinchina]

Wov I learn very well .

[@ayeshaghaffar2678]

Sir agr length wise dekha jye to jtni length km ho gi resistivity bhi km ho gi to ist wire small hy to us ki sb se km ho gi ?

[@sunnybutt2089]

Good job

[@captainmorgan3243]

sir you r so sweet and your teaching method is great

[@malikhuzaifa7763]

Sir resistance is directly proportional to length...so why the resistance of 3 rd wire is less than other two?

[@ayeshamoeen3972]

I guess there's been a mistake. But you're right R3>R2>R1 is right.

[@shaheerahmad4590]

Best video 🤗

[@e-quranlearning8575]

sir you are amazingggg Ma sha ALLAH

[@FaizanKhan-wq3xr]

Sir hum yeh second formula yeh alpha is equals to.. Wala formula kab used karnge... Aur Rt is equals to wala kab used karnge????

[@merubfarooq1956]

R3>R2>R1 for 3 copper wires or not?

[@nailasaeed281]

Yes

[@Musk-ik3xh]

Yeah I think so this is right,I was thinking same,maybe sir has mistaken while conveying lecture and writing at same time.

[@iqraaslam37]

Grear work sir..thankuee

[@iqraaslam37]

Great

[@ayeshamoeen3972]

Sir at 6:00 wouldn't it be R1

[@doc1677]

Was thinking same

[@AsadAli-rh3ew]

Sir but according to the formula of rho.. it do depend on Lenght, it is inversely depending on the length plzz sir answer

[@bethanyrumkui2293]

Rho is a constant.In order to understand that you can take the example of Ohms law.In Ohms law, resistance is the constant.Therefore increase in the value of current or voltage won't affect resistance as sir explained in the start of the video.The same is the case with Rho it is a constant equated to replace proportionality constant.It depends on neither of the quantities in the formula.only it's unit can however be derived from the formula.

[@AsadAli-rh3ew]

@@bethanyrumkui2293 thnku Soo much

[@mohammadahsan5655]

sir yeh kaisy hai k R(not) k bharnay sy difference ziada hoga jabkay is k kam hony sy difference kam hoga. Farz krein R(not)=20 C and R(t)=100 C. THEN DIFFERENCE IS 80. Agr ab R(not) ko brha k 50 C kr dein toh difference 50 C ata hai.

[@bethanyrumkui2293]

I think there has been a mistake in the way you've interpreted this concept. 1) First of all R(not) and Rt are the value of Resistance at the initial and t temperature. 2) let's say that a resistor offers Resistance At 0degree =2 Ohms After increasing the temperature to 30 degree the Resistance triples of it's initial value so at Rt =8ohms as (2*3/or 2❌2❌2) their difference (Rt-Ro) would only be 6. However if a resistor has larger initial value Ro =3ohm then increase in temperature from 0 to 30 also increases the resistance three times it's initial value Rt=27 because ( 3*3or 3❌3❌3) their difference would be 23. Therefore smaller Ro value results in smaller difference and vice versa.

[@khurramriaz3585]

it was amazing ... thank you so much

[@sadamhussain-cw9uv]

Super

[@maoobilli6446]

sir ap bohut acha parhaty hn computer b strt kar dy

[@humnahabib6418]

Thank you so much sir

[@hazzeleye7493]

U r Ma Sha Allah 👍👍👍

[@MuhammadHussain-dn8cs]

Sir, resistance is directly proportional to length.then in your lecture why are you said that R1 is greater than R2 and R3,while length of third copper you draw is the greatest among them.

[@MuhammadYasir-nj3ry]

Perfect !!

[@safeerkhan4460]

great

[@sandalrabia8155]

If temp increases and resistance decreases then what about conductivity? It is increase or decrease? .......... Also what is relationship btw conductance and conductivity ? Also btw resistance and resistivity?

[@FriendsPhysics]

everything directly happend to resistance will inversaly happen to conductance. Conductance is extensive and conductivity is intensive property. coductivity of a specific wire will remain same even if the dimensions(Length. area ) change

[@sandalrabia8155]

@@FriendsPhysicsok sir.... thanks alot

[@tabeerkhan1419]

An awesome way of teaching Sr thnks a lot for ur lectures wish to have u In our city in our college

[@FriendsPhysics]

JazakAllah

[@MuhammadKashif-we8ji]

@@FriendsPhysics sir agar ghalti se ghalti ho gae to please isko correct vhi kar dia karain please

[@muhammadabdullahshakeel3932]

kamal sir

[@ghulamraza7175]

Sir Conductivity unit MHO/m or per ohm per meter kaisay nikaltay derive kar k dikhain

[@FriendsPhysics]

per ohm per meter h

[@affankhan380]

sir apny kha h lenght or resistance ka direct relation but apny R1>R2>R3 lika h

[@arifullah7395]

sir platinum nd iron have different nature but still have same Resistivity nd conductivity???why

[@seharbatool3409]

Niceee

[@MafiaAzam-r4u]

❤

[@kiran26]

Why resistivity is non dimensional quantity

[@waseemabbas3735]

sir R3>R2>R1 Because R rdirectly proportional to L...... Sir am i right?

[@animex8315]

ah thank god i am not confused alone...

[@mariyammalik5820]

sir it would be much better if you explain graph also....

[@UsmanShani]

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[@hamidraza4905]

Apny Resistance ki ratio galat likhi h. Ayea ga R3 sub sy greater h

[@marieschirography4880]

Why temp coefficient is negative? Sir y ap ny last mn jo ecplainn kiaa ....kindly dubara bta dyn

[@noorfatima7953]

q k temp increase krne se R DECREASE hoti h

[@syedsufyannaqvi6812]

Sir I want to watch complete course 2nd year physics plz send me link

[@FriendsPhysics]

Check the playlists on our channel. FSC part 2

[@bakhtawarnawaz7791]

Like the video

[@junaidalikhokhar7719]

what is the difference between resistance and resistivity?

[@FriendsPhysics]

The resistance is represented by the symbol R whereas the resistivity is represented by the symbol ρ. ... The resistance of the material depends on the length, cross-section and area of conductor whereas the resistivity depends on the nature and temperature of the material.

[@naziajavedmughal9629]

I understand thanks

[@sibtehussain6752]

❤

[@apamber4491]

👌

[@ibrahimarshad]

Sir 1 help chaheay thi

[@muhammadhateeb9353]

sir hamey playlist me pura chap ni mil raha

[@FriendsPhysics]

2nd year playlist me mukmal pec pra hua hao

[@muhammadhateeb9353]

@@FriendsPhysics sir mujey samaj nhi aarahai k kahan per hai

[@sumbalshafique2303]

Sir ap ny last lecture main kaha k current increase krny sy resistance increaae krti hai ab ap keh rhy k resistance current dependent nhi.....

[@FriendsPhysics]

Kis lec me kha

[@sumbalshafique2303]

@@FriendsPhysics sir temp. ka kaha to kiya current increase krny sy temp increase nhi hoga?

[@sumbalshafique2303]

@@FriendsPhysics voltage increase to current increase, current increase means flow of charges increase and flow of charges increase to temp. Increase

[@ayeshamoeen3972]

Sir ne resistors in parallel combination waale topic mei btaya tha voltage remains same across the resistor but the current doesn't. Greater the value of resistance, lesser will be the current. Resistance itself is independent of the current

[@alihamalik916]

Sir smjh he nhi ☹️☹️😭😭

[@muhammadazamazam8947]

Super

[@muhammadazamazam8947]

Super