What is the formula of rate of dissipation of joule heat in resistance per unit volume ?

 

It will be most appreciated from my side if you give the derivation also ??

Hi Tejpal!

Joules law of heating states that, the heat produced in a conductor by a constant current is equal to the product of the square of the current and resistance of the conductor and the duration of time the current passes.

That is, Q =   I2 × R × t, where, Q is the heat produced in joules, I is the current through the conductor in amperes, R is the resistance of the conductor in ohms and t is the time in seconds.

Cheers!!

  • -23

the answer given in the book was E2/(rho)

that's why i confused can you explain this how to arrive this result

i have arrrived up to  req. rate =  (I/A)2 * (RHO)  AND if  I/A equals E/(RHO) I WILL GET MY ANSWER are they truely equal please explain sir

 

thanxxxx sir.....!!!!!!!!

  • 4

2 is square, sorry for mistake

  • -1
What are you looking for?