Question

An electric iron of 500w connected across 230 volts.find the current and resistance of the circuit

Answer 1

P=VI
I=P/V
I=500/230=2.173
Therefore current through the circuit is 2.173
V=IR
R=V/I
R=230/2.173
R=105.8 ohm

Answer 2

P=VI 

I=P/V

I=500/230=2.173

V=IR

R=V/I

R=230/2.173

R=105.8 Ω