Question

$<marquee> what \: is \: joule \: law \: of \: heating$

Answer 1

When a Current $ is made to flow through a Ohmic Resistance r for Time t , heat Q is produced such that :

Q = $²rt .

Answer 2

This law implies that heat produced in a resistor is,

1) directly proportional to the square of current (I×I)for a given resistance.

2) directly proportional to the resistance (R) for a given resistance.

3) directly proportional to the time (T) for which the current flows through the resistor .H=W=VQ

Since, Q=IT

H=VIT

Ohm's law, H=I×IRT