Physics-
General
Easy
Question
A rectangular coil PQ has 2n turns, an area 2a and carries a current 2I, (refer figure). The plane of the coil is at 60° to a horizontal uniform magnetic field of flux density B. The torque on the coil due to magnetic force is
- BnaI sin60°
- 8BnaI cos60°
- 4naI Bsin60°
- none
The correct answer is: 8BnaI cos60°
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