Question

3. A torch bulb is rated 100 W, 220 V. What is the maximum current it can draw? Also find the
resistance of the filament of the bulb.
Ans:

Answer 1

Answer:

power = VI

P =VI

100 =220 X I

100/220 = I

0.45 A = i

so the max current can ve drwan is 0.45A

R = I/V

= 0.45/220

=99 ohm