MagnetismMedium

Question

Four wire, each of length 2.0 m, are bent into four loops O,Q,R and S and then suspended in a uniform magnetic field. If the same current is passed in each, then the torque will be maximum on the loop

Options

A.P
B.Q
C.R
D.S

Solution

For a given perimeter the area of circle is maximum . So magnetic moment of (S) is greatest

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