A bar magnet of length 16  cm has a pole strength of 500 milliamp.m. The angle at which it should...

Описание: A bar magnet of length 16  cm has a pole strength of 500 milliamp.m. The angle at which it should be placed to the direction of external magnetic field of induction 2.5 gauss so that it may experience a torque of √(3)× 10^-5Nm is
a. π
b. π/2
c. π/3
d. π/6

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