Question

Calculate the quantity of heat produced in a 40 ⁡Ω resistor carrying a current of 5A in 5 minutes.

Answer 1

Given:

R = 40 Ω

I = 5 A

t = 5 min = 5 × 60 s = 300 s

Formula:

H = I²Rt

= (5)² × 40 × 300

= 25 × 40 × 300

= 3,00,000 J

= 3 × 10⁵ J