an electric bulb is rated 220v and 100w. when it's operated on 110v, what will be the power consumed?
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Answer:
Power Consumed = 25 Watt
Explanation:
Given :-
Power Rated = 100 W
Voltage Rated = 220 V
Resistance = ?
- P = V² / R
- R = V² / R
- R = 220 × 220 / 100
- R = 484 ohm
Voltage Supply = 110 V
Power Consumed = V² / R
= 110 × 110 / 484
= 25 watt
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