Question

an electric heater of resistance 8ohm takes current of 15A from the supply line. what is the rate at which heat is developed in the heater?

Answer 1

Here's your answers buddy,

Here, Given that Resistance of the electric heater (R) = 8 Ω

Current drawn (I) = 15 A

We know that P = I2R

                         = 15×15×8

                          = 1800w or J/s

∴ Heat is produced by the heater at the rate of 1800 J/s.