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Eamcet Physics
2 nd Year : Unit 2.1 ( Current Electricity ) - Current Electricity

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If a copper wire is stretched so that its length increases by 0.2%. Then its resistance

A. increases by 0.2%

B. increases by 0.4%

C. decreases by 0.2%

D. decreases by 0.4%

E. None of the above

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Correct choice: B

Explanation:

None

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Eamcet Physics 2 nd Year : Unit 2.1 ( Current Electricity ) - Current Electricity

Eamcet Physics
2 nd Year : Unit 2.1 ( Current Electricity ) - Current Electricity