Question

what is one joule of heat energy - class 10 H=IVt​

Answer 1

One joule per second equals 1 watt or 0.737 foot pounds, or 9.47 x 10^-4 British thermal units (Btu) (one Btu equals about 1,055 joules).

As a unit of energy, it is defined as the amount of energy required to raise the temperature of one kilogram of water by one degree Celsius.

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Answer 2

hey mate here is your answer.....

According to Joules law of heating, when a current I flows through a resistance R then :

Heat produed is directly proprtional to

1. Square of current (I²)

2)Resistance of wire R.

3) time (t) for which current is passed.

H=I²Rt

Derivation:

let us consider a resistance R , in which I amount of current flows.

Work must be done by current to move continuously.

W=Qx V

BUT Q=IXt

W=IxVxt

but from ohms law: V=IR

W=I²Rt

assuming the electrical energy consumed is converted into heat energy .

we write workdone as Heat  produced

so

H=I²Rt

hence derived

hope it's help you...