calculate the resistance of the bulb rated at 100 watt, 220 volt potential. what is the current flowing in the bulb when connected across a potential difference of 220 volt.
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Answer:
Given,
Power (P) = 100 W
Potential Difference (V) = 220 V
P = VI
... where I is the amount of Current,
100 = 220I
0.45 A = I
V = IR
.... where R is the Resistance,
220 = 0.45R
488.8 Ohm = R
The Current flowing is 0.45 A and Resistance is 488.8 ohm.
I hope this helps.
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