What is a resistor?

Find more information on: www.resistorguide.com/what-is-...
Resistors are passive electrical components that limit electric current. This video explains in an easy way the most basic background to help you understand resistors and use them.

[@MaeLSTRoM1997]

6:10 You said 'the colour band is grey' but highlighted the green band on the table. I think it would be better if you put a caption for correction because I see many people bewildered by the contents of the video. Other than that, pretty well explained. Great job

[@daltondarion4572]

that's true

[@mixerD1-]

7 years on bro....you're sh*t's still important ✌️

[@minutescience90]

Very nice lesson. Easy to understand and nicely put together :D Bravo!

[@niels8718]

"the third band is grey.." picks the green one -_-

[@Stings2pee]

+Niels Langeweg He's color blind

[@DavidTurnell]

+Niels Langeweg Just stay away from the light

[@johanatapia8274]

exactly. wtf is going on?

[@kyapox]

also said it has x10k.. lol.

[@dannyboy8330]

lol

[@taba2690]

Man thank you for clear my mind on this resistor presentation

[@geekoutgalaxy9243]

if you take the example of a hydraulic pipe then when the flow of the water is resisted hence creating pressure and the same happens with resistors then shouldn't the voltage shoot up in relation with the flow of electrons? just like when you press the tube of a vinyl pipe when water is flowing through it?

[@MaxProgramming]

Awesome video! The LED example made me understand it better. Thanks a lot

[@martinclark1333]

Thank you, this video made some things very clear! Well done!

[@brodygiroux2199]

np

[@bclamore]

You should include the voltage drop across the LED when calculating the resistance required to produce 30mA. Typically, red LEDs operate at 2V. So the calculation should be (9V - 2V)/0.03 = 230 ohms. However, with 300 ohms, the current will be 23mA, which is better than 30mA, because you should never operate any device at its rated maximum.

[@brodygiroux2199]

you should cheer for a better team

[@KennyCutout]

Wow this was way more in depth than I thought it'd be. Thanks!

[@GreenerHill]

Thank you. That was brilliant - explained simply and clearly. Always thought resistors looked like Liquorice Allsorts. :)

[@noumman]

Hi, when a current enters the resistor does it decrease the amount of electrons and we get less electrons comes out of resistor (at the other end) OR it (resistor) decreases the speed of electrons and we get slower electrons coming out from the other end of the resistor? Also when we say that 2A is going through resister R , does that mean before entering the resister or after the resister? Please help

[@gambart2002]

Awesome explanation, thank you for the video!

[@electronicsradiovideo]

Good summary of what a resistor is and the various types available.

[@RobertLongM]

Just Amazingly explained! Thank you!

[@ShengTheCraftsman]

Does resistor delays power consumption? i had a case of smoke generator that i mdel a coil out of vape wire and a 5v fan and the power was 7.5volt 1000mah rechargeable battery, it runs for roughly 8 -10 minute and the power will ran out, one of the biggest reason i'm thinking on adding a resistor was i hope it would slow down the flow of the current but does this actually means same amount of power would still be wasted ? and that protects the fans and the heater wire coil from burn out?, i'm working on my second homemade smoke generator for my RC(remote control) tiger 1 1:16 , but this time the boiling chamber was much more compact and smaller which made the smoke liquid runs out even faster and the coil would caught lit up with fire and later extinguish itself when the oxygen in the bottle was used up, i still had a lot of adjustment to do with this smoke generator , improved until it was much more feasible to use than conventional aftermarket smoke generator.

[@RX918]

Great video; however, I see two mistakes right away. 1st one is the LED itself, its hooked up backwards, shorter leg is usually/normally always negative. The 2nd mistake is that he chose the wrong value of the resistor's Multiplier, even though he did say the right one (he chose green instead of gray).

[@smartassist9700]

@Brian, I am starting my first project. I need someone with knowledge to review my project contents and recommend missing/needed resistors, etc to complete my project to fully function able in all areas. Can I resource you? I have a handicap that limits the way/method I obtain knowledge. Hence the “first” time, I need guidance/ assistance. I am determined not only to complete this project… but obtain. Skills to complete a total of 250 projects on my own….later on. Most Humble Appreciation! Alton

[@miso1995srb]

It looked better in this way,this video is more theory than practical

[@robviolin1]

Great vid, thanks for sharing. Do you know where I can find an electrical board hr51a? It is used for charging an 18v. There is only 4 parts on this board, 3 are resisters I don't know what the other part s is. It is a cylinder shape thing with 3 loops around it . Two brown and one black. Thanks

[@stevesmith8320]

sounds like an inductor

[@sebastianvonkebab3585]

Thank you. I was able to understand the explaination easily. Good Video!

[@brodygiroux2199]

thanks

[@yandhi4202]

thank you so much! loved the example with the light - made me understand why its important to have a resistor

[@davidcopperfield2278]

So does the resistor change its Ohms if connected to something else ? Like, using that same as in the LED example, with another 45mA LED, will that same resistor switch to 200 Om ? Or is that value a constant depending on what ? The material that resistor is built with ? Can that same transistor be used for some high voltage stuff like city electrical connections with 1.000.000 V ? If no why not ?

[@FrozenSide]

The LED part is inaccurate, since you didn't take into account the voltage drop on the LED. A 3mm red LED has about 1.7V drop across it, so the drop on the resistor is about 7.3V. The correct equation is R=7.3V/30mA, so R=243.333Ω

[@BertGrink]

+yotam amit Yep, i noticed that too.

[@lilcatfriend4575]

I think he was trying to simplify it

[@GusNando]

thanks, very interactive and clear 👍

[@TheChikabum]

This is amazing. I have a question though. why does a resistor have to be on the positive lead? I understand that the assumption of the current direction ( from +ve to -ve ) was a mistake bcuz scientists when they were first working with electricity, they didn't know about the structure of an atom. Shouldn't we adopt the correct direction then to prevent the LED from burning out? which is from -ve to +ve? (Thank you in advance for any help you might be able to provide)

[@DCParr]

This version of the essential resistor was designed and developed in 1959 by Chicago inventor, Otis Boykin. Mr. Boykin would later become better known for his next invention, a control unit for the pacemaker, which used electrical impulses to stimulate the heart and create a steady heartbeat.

[@joeyg2680]

I love your website.! Very helpful. Thanks

[@garywood9525]

At the 2:28 mark you converted the mille amp ( 1/1000th ) of 30 to 0.03 to give 9/0.03 . Others may not have caught that if they were just checking the tutorial out.

[@quackquack7537]

whats a mille amp???

[@santoshdebakikrishna381]

Thanks!! Nice Explanation

[@venkat7834]

thanx for the information but can any one say that in the video it was shown that by connecting the resistor in series with bulb the current was controlled but in case of theory we use to say that for series connection of resistors the current flowing is same at all the resisters connected in series what does it mean?

[@kurmaeshwarsaisrinivas7730]

Thanks For your information. This Information will help me

[@aboyd144]

Very informative! Thank you!

[@LearningEngineering]

thanks for your video.

[@wildergrabrielmendoza5707]

Lovely video content! Apologies for the intrusion, I would appreciate your thoughts. Have you considered - Qanayce Wiyulian Equalizer (Have a quick look on google can't remember the place now)? It is a good one off product for unveiling the technique to repair your electronic items without the hard work. Ive heard some interesting things about it and my work buddy after many years got excellent results with it.

[@ziethor7016]

Content 👍👍👍 watching from Indonesia 🇮🇩🔔✅

[@rmhutchins7]

I enjoyed your video. It was very helpful. Thank you!

[@ailabipeter422]

Hi there

[@anuvin8924]

Finally i got to know about the resistors thank you 🙏

[@ELECTROSIA]

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[@chickenjoesevy]

I'm glad you explained how resistance affects the "LID" ;)

[@omnissob260]

faith in humanity restored. thank you for your to the point 0 fluff tut. Your a great speaker

[@bravobanks]

Excellent video! Thank you so much!

[@shahsaman7526]

Nice video. Thanks for uploading.

[@prodson8310]

Great video. Thank you

[@gowthamgts]

well explained man... great work.. keep it up.

[@luckylicks3497]

6:08 If the third band is grey, then why did you highlight the green?

[@astroglide420]

Can you explain why you placed the resister at the positive lead, and not ground?

[@johnmeisenheimer9843]

great video. helped me understand. thanks a lot

[@jedfilmsstudios]

That helped me a ton, thank you.

[@ailabipeter422]

Hi there

[@PBS-nm1uu]

great presentation please keep the videos coming

[@JahanZeb1976]

Wonderful. Great lesson for beginners.

[@kbnpptctklb5038]

yeah

[@shahsaman7526]

Sir really good .Very clear voice easy to understand. Thanks

[@davidcopperfield2278]

whats up with that colored code resistor ? does that thing actually physically change colors with different voltages applied to it ?

[@MrGoldman9]

Thank you very much that was very grateful short video basic knowledge

[@romans116notw]

Question: I have a Bose speaker system in my car and all the speakers are 2 ohm. What resistor can I use to take a 4 ohm speaker and make it 2 ohm?

[@nicholasgoodfellow5774]

How can I reduce the current while reducing the wattage of the complete circuit also?

[@ibrahimshareef7533]

I dunno anything about electric connection but is the batter +ve connecting with led - ve ??

[@lolopli1]

Nice video I really liked it!

[@J4UPro]

Thanks, from now I start to learn electronic

[@kengiee.merenciano6990]

Thank you for this video, i gained lot of information about resistors which I could also share to my students

[@mrdreamer8257]

if current flow in series, does not it the value will remain same? but how the resistor can reduce the current value in series? anyone can help me

[@vinothkumar4480]

thanks this was help full for my casp report

[@johnbrophy9706]

would you please tell me if you know that in the 6 minute and 9 seconds you; it seems make the grey band calculate with a green value .....if this is so then you may want to indicate a correction and give the video the high standard you have with the rest of it , for the sake of those who are less able to deal with errors in their self educating. I appreciate the hard work you all put into the priceless videos on youtube in this field. thanks john

[@jesmonddemarco2658]

Thanks for this tutorial.

[@Bianchi77]

Nice info, thanks for sharing :)

[@siddhunkarthik]

Yes, when you connect two or more resistors in series in a ckt, (i.e R1 & next to it, R2, R3), each resistor values (ohms) "R" are added, as to find Equivalent Resistance Requ= R1+2+R3, while calculating the current flow I=V/(R1+R2+R3)=V/Requ. The reason is , the voltage potential at the first resistor arriving at the resistor R1 is taken as Voltage for calculating current flow on each resistors in series. Hence, the current flows on all the resistors will be the same, but with drop in voltage.

[@bobgatewood5277]

No I don't think that is correct. By ohm's law: V=(A)(R) The higher the resistance, if the amperage stayed the same, voltage would also rise proportionally; obviously, that is NOT what happens, resistors do not add voltage. If the voltage stays the same (given a potential differential = X from a given source like a battery) and if we change the value of the resistor, then what must change is the current to make the numbers add up: V=10 R=10 , 100 , 1000 A=X 1. 10=(x)(10) A=1 2. 10=(x)(100) A=0.1 3. 10=(x)(1000) A=0.01 The higher the resistance = the LOWER THE CURRENT.

[@edward3105]

So resistor lowers the current and the voltage or only current??

[@Str3ss3dpo3t654]

Ok, so I know this might be a noob question, but what do I put I front of an LED if I want a short delay after I switch the circuit on? If you want to know why I'm asking, it's because I'm soldering some LEDs to my xbox controller and I want to have a delay for each of them when the rumble activates. I am using 6 LEDs, 3 on each side of the clear front trim (what I mean is after 1 second 1 led lights then after 2 seconds 2 LEDs light and after 3 secs all 3 (on each side) light up). It would be amazing for a reply. Thanks!

[@AMalas]

you would need a microprocessor! those tall black ones i mean

[@CamKatarn]

Maybe somebody can help me out on this one? I'm about to connect a pocket plasma clip-on I bought (normally using 2x AAA 1,5v batteries = 3v) to a 9v block battery that also is connected to other electronics. What resistor do I need for this one (what color schematic)? Anyone knows? Because I'm not that experienced reducing voltage and want to turn everything on and off with just one switch.

[@VilasagarSrinivas]

good video.... i came to know about resistors.. thanks a lot

[@MegaDutcher]

Nederlands accent herken je altijd!!! Toch goed geprobeerd.

[@SE45CX]

Ja, zeker weten dat meneer weerstand een nederlander is. Tenslotte sluit hij ook nog de LED verkeerd om aan.

[@saivolety9225]

can i use this video for our blog?

[@georgemclaughlin9001]

Thank you for making it understandable for someone like me with no knowledge of electronics.

[@ailabipeter422]

Hi there

[@klobite]

great explanation thank you

[@laymeke5860]

amigao os restores ele fica em curo ou ele so aumentar o valor

[@Angela_Devy]

Great lesson ❤

[@kyrinky]

Amazing, thanks!

[@amgsworld2617]

Thank you so much over a year I am trying to understand this but, you did it to get me understand; by diagram examples with water pipe. | once again thanks___

[@076syafiq]

thank you for your information.

[@kimpacolet5603]

Isn't the longest wire the positve side of the LED?

[@miccomillchrisreyes8897]

Kim Pacolet yes

[@lonzerwalker6569]

Micco Millchris Reyes

[@BossManTee]

so in 2:46 he should've connected the wire differently ?

[@javvadisudhirkumar9461]

hello brother resistor connected any way any side in only series the above circuit diagram is series diagram

[@fizzsquad4005]

The led should not work he has to flip it over and it is not called a lid

[@roshanlaloo1036]

do resistors have polarity (positive or negative)?? or can we use them in the circuit anyways... thanks

[@kenlogsdon7095]

You may only use resistors if they have been preapproved by the Federal Resistor Polarity Commission for handling either positive charge (protons) or negative charge (electrons) else your circuit will either start generating antielectrons or antiprotons (depending, obviously, on the type of resistor you are attempting to abuse) and explode or it will suddenly vanish into the 8th dimension. Never ever forget: Knowledge is Power in today's increasingly technological world.

[@TheCrashError]

Wow this helped me soooo much!!! Thanks alot! :D :)

[@Thetrucky69]

Excellent information.

[@balraj5120]

Thanks for clearing my doubt.

[@sylvieruland8697]

this 6 minute video explained more than all of grade 9 science.... Thank you!!!!!!!

[@sylvieruland8697]

Thankyou :)

[@ArvindMaurya-jq2cc]

+Sylvie Ruland hi hello you aur so sexy girl

[@brodygiroux2199]

@@sylvieruland8697 Science sucks

[@WindOnMyWings]

Excellent explanation

[@johnchase5891]

Isn't the LED positive lead the long one? Might want to update your image.

[@MrVillainn]

Can someone explain where he got the number 0.03 from on 2:33? It is confusing me D:

[@ArikCool]

thank you so much, now i am pro because i learn lots of thing from your video

[@krantimadhav]

thats a great explanation..

[@C39SHARKDRAKE]

Nice vid dude thx!

[@Adnicego]

very clear explanation.

[@ft6069]

Why did the 30mA turn into 0.03 on the equation at 2:28 ? Thanks in Advance !

[@Eren-yl2qi]

According to formula , when you use Voltage , you must use Amper as a unit.So there is a conversion between milliampere to Ampere then 30mA makes 0.03 Ampere.Actually they are the same value.

[@theaveragegamers3180]

Thank u guys for helping me

[@afzalrao291]

Very Good tutorial.

[@teddycontalba8595]

Theres something wrong in this video but we can adjust for simple error ...make sure to be more strict in posting video to help more newbies but u explain well about the topic sir god bless and more power...

[@jameselliott9397]

When did 1000 change from m to k?

[@steelychain]

Hello my resistor has burnt out but it look's like it is 1 brown and 3 black, can you please tell me what the resistor strength is, or even if you can get that configuration. Thanks and hope you can help. I've asked 4 other people but they haven't answered. Please help.

[@PotentStudios]

6:07 Has a grey band, points to green, says it has a multiplication factor of 10K...

[@gurpreetsandhu9530]

I was going to comment that

[@ArifBillahOnGoogle]

Mistake over a mistake 😂

[@Giga1337]

fuck man, totally. lol.

[@eirikmurito]

I did an experiment hooking up a resistor with high resistance to the wall socket (BTW NEVER do that, its stupid) and i discovered it didnt heat up noticeably. I concluded that all the current must have gone right through it instead of escaping as heat, but then i realized: if all the current moves right through it then its a short circuit so how come the electric fuse didnt activate? I realize there is a flaw somewhere in my logic but i dont know where. Someone please help!

[@dannyvee8116]

Thanks for the info...

[@ppcjunkie]

awesome video.

[@Kahain]

hey, can you tell me what is keramic? I've never heard of that stuff

[@BatataVada09]

+Kahain he meant ceramic

[@blabla33333]

So. someone help me. i want to power about 100 leds from 5V. how can i power it on the best way? the leds are 3.1v

[@mosharofamin5902]

best explain !!! thank you

[@DavidRamkumar]

very good.thank you so much.