Correct Answer - Option 2 : 7200 J
Concept:
The heat generated by a resistive coil or device is given as
\(H = \frac{V^2}{R}t = I^2 Rt\)
H is energy, t is time, R is resistance
Calculation:
Resistance R = 50 Ω
Voltage of Battery V = 10 V
time t = 1 hr = 3600 second
Heat dissipated
\(H = \frac{v^2}{R}t = I^2 Rt\)
\(\implies H = \frac{10^2}{50} \times 3600 = 2 \times 3600\)
⇒ H = 7200 Joule
So, the correct option is 7200 J.
