Share

# A Light Bulb is Rated at 100 W for a 220 V A.C. Supply. Calculate the Resistance of the Bulb. - Physics

ConceptReactance and Impedance

#### Question

A light bulb is rated at 100 W for a 220 V a.c. supply. Calculate the resistance of the bulb.

#### Solution

Power of the bulb, P = 100 W and Voltage, V = 220 V

The resistance of the byb is fiven as R =V^2/P = 220^2/100 = 484Ω

Is there an error in this question or solution?

#### Video TutorialsVIEW ALL [2]

Solution A Light Bulb is Rated at 100 W for a 220 V A.C. Supply. Calculate the Resistance of the Bulb. Concept: Reactance and Impedance.
S