Question

How much current will an electric bulb draw from 220V source ,if the resistance of the bulb is 1200 ohms ? If in place of bulb ,a heater of resistance 100 ohms is connected to the sources , calculate the current draw by it

Answer 1

the current will an electric bulb is 11/60

Answer 2

For the electric bulb:

V = 220 V.

R = 1200 Ω.

Using Ohm's law,

V=IR

220 = I × 1200

220/1200 =I

I =0.183 A

For the heater:

R = 100 Ω.

V = 220 V.

Using Ohm's law,

V= IR

220= I×100

220/100= I

I =2.2A