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Solve problem 15 if the length of rod is...

Solve problem `15` if the length of rod is `2L` and resistance `2r` and it is rotating about its center. Both ends of the rod now touch the conducting ring.

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To solve the problem step-by-step, we need to analyze the situation involving a rod of length \(2L\) and resistance \(2R\) rotating about its center while touching a conducting ring. ### Step 1: Understand the Setup - We have a rod of length \(2L\) that is rotating about its center. - The rod has a resistance of \(2R\). - The ends of the rod touch a conducting ring. - The magnetic field is directed into the plane of rotation. ...
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