Moving Charges and Magnetism

Question: Current i is carried in a wire of length L. If the wire is turned into a circular coil, the maximum magnitude of torque in a given magnetic field B will be

1) $\frac{{Li{B^2}}}{2}$

2) $\frac{{L{i^2}B}}{2}$

3) $\frac{{{L^2}iB}}{{4\pi }}$

4) $\frac{{L{i^2}B}}{{4\pi }}$

Solution:

Explanation: No Explanation

Force and Torque on a Current Carrying Conductor

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