A resistance of 25 Ω is connected to a 12 V battery. Calculate the heat energy in joules generated per minute.
Here R = 25ohms, V = 12V, H = ?, t = 60sec
According to Ohm’s law
V = IR
12 = 25XI
I = 0.48amp
We know that according to Joule's law of heating
H = I2RT
H = 0.482X25X60
H = 345.6J