Question

A 100W electric bulb is connected to a 250V supply.
(a) Determine current flowing in the bulb and (b) the resistance
of the bulb.

Answer 1

Answer:

1. The rating 100W – 250 V on the bulb means that if the bulb is lighted on a 250V supply, it consumes 100W electrical power i.e., 100 electrical energy in 1 second. Given : P = 100 W, V = 250 volt