Question

Question 19:
A resistance of 25 Ω is connected to a 12 V battery. Calculate the heat energy in joules generated per minute.

Lakhmir Singh Physics Class 10

Answer 1

R = 25 ohm

V = 12 v

1 min = 60 sec

I = V÷R

I = 12 ÷ 25 A

H = I² R T

H = (12÷ 25)² × 25× 60

H = 144 ÷ 25 ×60

H = 345.6 J