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In an electric circuit, potential difference across a lamp is 20 V and current through the lamp is 0.5A. The resistance of the lamp is

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In an electric circuit, potential difference across a lamp is 20 V and current through the lamp is 0.5A. The resistance of the lamp is
A. `10Omega`
B. `20Omega`
C. `30Omega`
D. `40Omega`
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1 Answer

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Correct Answer - D
`R=(V)/(I)=(20)/(0.5)= 40 Omega`
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