Question

An electric current of 2 amperes flows in a heating coil of resistance 50 ohms for 3minutes 20seconds.determine the heat produced

Answer 1

To determine the heat produced by the heating coil, we can use the formula:

Heat = I^2 * R * t

Where:
I = current flowing through the coil (2 amperes)
R = resistance of the coil (50 ohms)
t = time for which the current flows (3 minutes 20 seconds = 200 seconds)

Plugging in the values:

Heat = (2)^2 * 50 * 200
Heat = 4 * 50 * 200
Heat = 400 * 200
Heat = 80000 Joules

Therefore, the heat produced by the heating coil is 80,000 Joules.