Question

An electric bulb is rated as 22 watt and 220 volt find the resistance of this bulb

Answer 1

I = V/R (ohm's law)

We want I

P=VI

I=P/V

=20/220

=1/11

R=V/I (ohm's law)

R= 220/1/11

R= 220×11

R= 2420 ohm

Answer 2

Resistance
$= \frac{{volt}^{2} }{power}$
ans 2200