DC Circuits - Power Dissipated in Resistors

[@harbinger9231]

There are loads of students suffering in University who would love to have teachers like you.

[@PhysicsNinja]

I applied for over 100 university jobs like 5 years and never heard back from them. I decided to start Physics Ninja.

[@harbinger9231]

@@PhysicsNinja That's unfortunate and unjustified unfortunately Have you ever tried including your channel link in your resume?

[@rudradwivedi434]

You're kind of lucky. I am in high school lol

[@panch2oo2]

@@PhysicsNinja I'm sorry but thank God they refused you otherwise physics ninja wouldn't exist. Their loss our gain 🙏

[@PhysicsNinja]

@@panch2oo2 Absolutely, lIfe goes on. There are many ways to teach physics outside of university. Thanks for the support.

[@carolineseffen7458]

Wow nice video, I would like to thank you from the middle east, your teaching is better than instructors at college ❤, Many thanks

[@ang55284]

Wow. This is the clearest explanation i found on youtube. Thanks a lot.

[@PhysicsNinja]

Thanks for the kind words.

[@dancingdiva7106]

U should go to extra class or unacademy then..👍

[@prateeksharma2331]

@@dancingdiva7106 us ka teacher hai wo 🤣

[@ethancole8326]

Have a test tmr and compared to my online teacher who is super dry and doesn’t really try to explain anything you are god sent

[@PhysicsNinja]

Good luck! You got this

[@harshparashar3822]

Nice vedio. Love from India

[@LOKESHKUMAR-up4qh]

Thanks a lot your explanation is very good

[@PhysicsNinja]

So nice of you

[@valerie.mccaffrey]

Perfect for my exam, thanks!

[@Getsomewaterplease]

Should not the power of the battery be negative since it's generated?

[@cacerxszz2907]

Subscribed 😊 this helped me answer my assignments Sends love from philippines

[@PhysicsNinja]

Caca Cala Physics Ninja loves helping students. Good luck with your class!

[@tobismonias143]

bill burr is great physics teacher who knew

[@masumamomtazkhanjerinnusra3908]

You clear my concept. Thank you

[@shashwat_kushwaha5948]

In India, this chapter is in last year of our schools. When do you study it in your countries?

[@princemarasigan4031]

Thanks alot! the clearest DC circuit power dissipation in youtube hahaha

[@mydecember4822]

Thank you so much! Great explanation.

[@MapaloChabwe-yl8yc]

How did 4÷3 become 4÷3

[@thishandlekeepsdapeace]

How does this problem change when you have two voltage sources? Do you use superposition theorem?

[@DroppinShellzz]

This helped a lot, Thanks!

[@70naks]

Amazing explanation!!! Thank you

[@andriykopiychuk3307]

So, why then, when I connected 10K 0.25W resistor to the 12V battery it got hot enough to burn my finger? According to the calculations: 12v/10000 Ohms = 0.006Amps; And then 0.006A*12V = 0.072Watts. While resistor tested was 0.25W - way more then 0.072Watts required. Why is it getting melting hot?

[@prateeksharma2331]

In which standard u guys learn this thing in USA tell me in from middle East

[@PhysicsNinja]

This is a first year college level question. Something you might see in high school AP physics.

[@shashwat_kushwaha5948]

You go through the smallest steps which isn't necessarily good. At this stage students can obviously understand the calculation steps while you just go through the conceptual steps. It was hardly a 2 or max 3 minutes question that you explained in 13 minutes. You explain quite clearly though.

[@miguelquintana6456]

im confused where do you get 3/3 from 1/1+1/3

[@Saifalharthi-n6g]

Nice explanation but why 1i2 = 3i3 ?? i didn’t understand this point💔

[@PhysicsNinja]

SßS ßS the voltage across each branch in a parallel circuit must be the same, so across the center branch the voltage drop is i2 * 1 and across the last branch it’s i3*3. each of the terms is given by R*I.

[@raymondharmuthiii6091]

I'm glad you asked because, coincidentally, I have a similar question while doing a similar circuit for homework for my General Physics II class.

[@_xparadoxical8746]

I thought your cursor was a bug on my screen

[@Faisal-fv4gg]

Why the power calculated from the battery not negative !??

[@zorack4961]

Shouldnt the P.D across the 1ohm resistor and the 3 ohm resistor be 20V , as it is parallel to the battery?

[@PhysicsNinja]

Not in this case because there is another resistor in the same branch as the battery. The potential drop across each branch must be equal.

[@aldeguerrealingo5251]

how 3/4 ohms must be explained how it is obtained if possible, so that viewers can understand it well...

[@mitchellbuckner4364]

I like to think that I have a pretty good grasp on combination circuits, but man, this was so confusing. Just use decimals man. So much easier.

[@rodrigolerdodetejada3233]

How do you solve if instead of a voltage you have 5Amps?

[@prateeksharma2331]

We put 3 amps in R=V/I and fing voltage

[@wassy797]

what do we do when we have 3 resistance in a parallel circuit instead of 2? :(

[@aliciaroberts3965]

it adds the same! just sum them all up inversely for parallel resistances. so for 3 resistors it would be (R1+R2+R3)/R1R2R3 just make sure to apply the directions correctly based on the direction of the current by Ohms and Kirchhoff's laws :))

[@wassy797]

@@aliciaroberts3965 thank youu alicia! ♡

[@ang55284]

Do you have courses about lenses sir? I always have a hard time solving them.

[@PhysicsNinja]

Not yet, optics courses are about a year away. Ninja is too busy!!

[@PhysicsNinja]

If you have a specific problem email [e-mail]

[@ang55284]

Of course ninjas are always busy. Hahah. Oh, thank you I will. I'm looking forward to your next videos.

[@alceslourrainesaguid2943]

Thank you 🥺

[@soutinholegal3169]

EU TE AMO

[@abhijeetpatil1391]

Thanks

[@musahammad1779]

Very nice

[@jeffchai4841]

thank you so much sir

[@davididosa278]

GOD bless you ......excelent lecture .......do you know this JESUS is love you ,dead for you....... JESUS IS the way the, truth and the life in holy bible joh 14;6

[@spaceshipastro]

thanks a lot

[@OkelloJohnson-cw7ft]

❤

[@ChemChoqnai]

its a hard way for someone who is not very good in physics :(

[@rishigaran8869]

Honestly it is very messy

[@jhonnywilliams600]

80/27 wtf

[@danchaplin2911]

Needlessly leaving shit as fractions? Why? Nobody does this? You're own personal preference? Seriously dude, unreal

[@PhysicsNinja]

Lol, no need to get all worked up over fractions. It was to show that the power dissipated was exactly the same as the power supplied, no rounding errors.

[@MrWasim100100]

man decimals are easier to understand that's what our stupid DMMs display any ways nice video otherwise :)

[@jhonnywilliams600]

Very messy