Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of the magnetic moment is

Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of the magnetic moment is
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Two wires of same length are shaped into a square and a circle. If they carry same current, ratio of the magnetic ... `pi:2` C. `pi:4` D. `4:pi`
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