A heater coil of resistance 20 Ω carries a current of 3 A.
PHYSICS · Multi-part · CBSE · Physics · Current Electricity · Current Electricity
Problem
A heater coil of resistance 20 Ω carries a current of 3 A.
(i) Calculate the power developed in the coil.
(ii) How much electrical energy is converted into heat in 2 min?