Question

heat energy of 1250 Joules is produced in 10 seconds in an electric iron having a resistance of 500 ohms. Find the current flowing through an electric iron.

Answer 1

the current flowing through an electric iron is 0.5ampere

Answer 2

I^2RT= ENERGY

THEREFORE

I^2*500*10=1250

I^2*5000=1250

I^2 = 1250/5000

I^2=1/4

therefore I=0.5

therefore 0.5 A current flows through the iron