Physics 13.3.2a - Joule`s Law

Joule's Law, explained conceptually and mathematically. From the Physics course by Derek Owens.

[alamIbbar]

Thank you, sir, for creating these excellent videos. I was having some trouble understanding the concepts of electricity, and I turned to your videos to provide me with a fundamental understanding of how these concepts work.

[dsjtravels]

i passed my exam because of this thanks!

[massoomaalrshim]

Thank you so much, you've made so clear to me. I truly appreciate it

[sadiyabudroo]

Thank you so much. This law was not easy to learn on my book but its seems quite easy here.

[BitZKriGC]

@derekowens i found this to be very good even though its more like a refresher to me it doesnt hurt to reread or rethink or even remind yourself what you know what you dont

[javierjjs]

You said that the conversion of electrical energy to heat is 100% efficient. What about the light that is produced by glowing resistors like a heating coil such as on an electric stove?

[solanine]

Why is it then that the formula can be rewritten into P=U^2*t/R?

[lutandar]

These videos are soo helpful!   - Thanks!

[yesman]

you can generate the formula for ohms law by breaking down one volt (Volt=Joule/coulomb) into SI base units.

also ive been looking eveywhere for a video that equates formulas by using the SI base units but there dont seem to be any. i might look into making them myself.

[MrPlankton]

What about the devices that are not used for heating? How do we calculate how much heat they dissipate, and how much heat is used for useful work? In case of heaters, dissipated heat is basically useful work :D.

[tarapreethmutyala]

Really a good video. I don't know much, but i think resistance and temperature are
related .The temperature changes right, as you said.Heat is released continuously .So will there be any change in resistance

[BitZKriGC]

@derekowens nice channel i recently went to classes in highschool about four years back that was supoosed to allow the students to gain a certification to work on electronics legally in the US unfortunately the state stopped paying for the class because some ppl dropped out they said theyd pay for the certification tests only if 25ppl attended never flunked or left the class

[motnbi]

Very neat presentation, straight to the point. Thank you

[struggler]

how can you apply ohms law and the electric resistance Temperature is changing

[tuttar]

So if you have: 10^2 A * 1k ohm * 1 sec = 100.000 J
When you convert that with online celcius converter i give you: 52.66 degree celcius

That means the resistor should go from 1 to 52.66 C* after 1 second. Does that sound approximately right to you guys?

[ijash-yt]

i like your handwriting.. make it a font

[gouhuskies]

So, I'm confused.

Is Joule's Law H = I^Rt or is it P= I^R? (Sorry I have to use the ^ symbol for squared) or is it both depending on whether or not you're looking for power vs. heat?

[KSITREVS]

I am just going in to college and I am curious, Is this university stuff or A-Level. I am a huge fan of electronics and this channel is pretty damn awesome Thank you for your videos! See you around

[halodude]

hey im 13 and kinda new at physics. Im highly interested in Quantum Machanics and study alot about it. My father recommened learning this. Im just not understanding quite well. Could you please help me and explain it to me. Thank you!

[jeremykemp]

Does the 'P' stand for watt?