Question

How much current will an electric bulb draw from a 220v source ,if the resistance of the bulb filament is 1200 ohm

Answer 1

V = IR

I = V/R

= 220/1200

= 0.183A

Answer 2

V= 220V

R=1200 Ohms

We know,

V = I*R

So, I = V/R

       = 220/1200

       = 0.183

The current drawn is 0.183 A