Question

An electric iron is connected to 220V main supply line if the power of electric iron is 840W. Calculate heat produce

Answer 1

Answer:

i=p/v=360/220=1.63A and

R=v/I=220/1.63 =134.96

second case

i =p/v=840/220=3.81A

R=v/I =220/3.81=57.74ohn