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If the Potential Difference Between the Ends of a Fixed Resistor is Halved, the Electric Power Will Become: (A) Double (B) Half (C) Four Times (D) One-fourth - CBSE Class 10 - Science

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Question

If the potential difference between the ends of a fixed resistor is halved, the electric power will become: 

(a) double
(b) half
(c) four times
(d) one-fourth

Solution

(d) one-fourth
Since P = ` V^2/R`, when the potential difference is halved, the power becomes one-fourth

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Solution If the Potential Difference Between the Ends of a Fixed Resistor is Halved, the Electric Power Will Become: (A) Double (B) Half (C) Four Times (D) One-fourth Concept: Electric Potential Difference.
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