Question

an electric kettle is rated 1000w 230v , what is the resistance of its element

Answer 1

Hi !

Power = P = 1000 W

Voltage = V = 230 v

Resistance = R

P = V²/R

1000 = 230² / R

R = 230 x 230 /1000
    = 52.9 Ω

Answer 2

given,
P=1000 W
V=230 V
we know, P=$V^{2}$/R
∴, R= $V^{2}$/P
       =(230×230) V/1000 W
       =52900/1000
       =52.9 Ω