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Current Electricity — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsCurrent Electricity2 Marks
Question
If the radius of a copper wire is doubled, will its specific resistance increase, decrease or remain same?
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Answer

The specific resistance of a wire depends only on the material (at a given temperature).
Therefore by changing the radius, the specific resistance of copper remains unchanged.

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