Question

how much will be the heat developed in 4 A current flow through a conductor of resistance 400 ohm for 5 minutes

Answer 1

Answer:

1920 kJ

Explanation:

T = 5 mins = 5 x 60 s

H = I²RT

H = 4 x 4 x 400 x 5 x 60

H = 1920000 J = 1920 kJ