A rectangular coil of 20 turns and dimensions 0.0 4 m * 0.02 m is a suspended with its plane and longer sides vertical in a horizontal field of 200 oersted. If a current of 2 A flows in the coil, calculate the moment of couple initially on the coul when its plane is:
i) parallel to the field, ii) inclined at 60 degree to the field
Ans:- 64 * 10 to the power -5 Nm, 3200 dyn cm
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