A square coil of side 10 cm consists of ...

A square coil of side 10 cm consists of 20 turns and carries 12 A. The coil is suspended vertically and the normal to the plane makes an angle of `30^@` with the direction of uniform magnetic field of 0.8T. The torque acting on the coil is

0.69 Nm

0.96 Nm

0.096 Nm

0.069 Nm

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A square coil of side 10 cm consists of 20 turns and carries a current of 12A. The coil is suspended vertically and the normal to the plane makes an angle of 30^(@) with the direction of uniform magnetic field of 0.8 T. The torque acting on the coil is

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A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of 60^@ with the normal of the coil. Calculate the magnitude of the counter torque that must be applied to prevent the coil from turning.

(a) A circular coil of 30 turns and radius 8.0 cm carrying a current of 6.0 A is suspended vertically in a uniform horizontal magnetic field of magnitude 1.0 T. The field lines make an angle of 60 ^@ with the normal of the coil. Calculate the magnitude of the counter torque that must be applied to prevent the coil from turning. (b) Would your answer change, if the circular coil in were replaced by a planar coil of some irregular shape that encloses the same area? (All other particulars are also unaltered.)

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