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

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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?

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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.
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