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The voltage across a bulb is decreased b...

The voltage across a bulb is decreased by 2%. Assuming that the resistance of the filament remains unchanged, the power of the bulb will

A

decrease by 2%

B

increase by 2%

C

decrease by 4%

D

increase by 4 %

Text Solution

Verified by Experts

The correct Answer is:
C
`P = (V^(2))/(R) `
`P prop V^(2) ` [R = constant ]
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