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A wire has a resistance R. What wil will...

A wire has a resistance `R`. What wil will be its resistance if it is stretched to double its length?

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To find the resistance of a wire when it is stretched to double its length, we can follow these steps: ### Step 1: Understand the relationship between resistance, length, and area The resistance \( R \) of a wire is given by the formula: \[ R = \frac{\rho L}{A} \] where: ...
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