A tungsten filament bulb rated at 500w, 100v is to be connected in series to a capacitor across 220v, 50hz supply. Calculate the capacitor such that the voltage and power consumed by the bulb are according to the rating of the bulb
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Expert's answer
2021-05-06T19:15:15-0400
Explanations & Calculations
This symbolizes an RC circuit.
The current flowing in the circuit can be found by the bulb assuming it is a resistor,
I=VP=100V500W=5A
If the voltage across the cap is Vc, then the phasor sum of the voltages will be
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