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Question
Calculate the resistance of an electric bulb which allows a 10 A current when connected to a 220 V power source.
Solution
Current flowing through the electric bulb, I = 10 A
Voltage of the source in the circuit, V = 220 V
According to Ohm’s law,
V=IR
Where, R is the resistance of the electric bulb
`R=V/I=220/10=22`Ω
Therefore, the resistance of the electric bulb is 22 Ω.
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