Question

Calculate the rate at which heat is developed in the filament of a bulb of resistance 100ohm such that a current of 0.5A flows through it for 10 minutes

Answer 1

Resistance (R) = 100 ohm

Time (T)= 10

current (I) = 0.5 A

Now,

H = I² × R × T

H = (0.5)² × 100 × 10

H= 250 J