If τ 1 , τ 2 , τ 3 and τ 4 are the magnetic torques acting on the bar magnet when it is kept at angles of 30 ° , 60 ° , 90 ° and 135 ° respectively with the direction of the magnetic field, then which

Question

If τ 1 , τ 2 , τ 3 and τ 4 are the magnetic torques acting on the bar magnet when it is kept at angles of 30 ° , 60 ° , 90 ° and 135 ° respectively with the direction of the magnetic field, then which among the following is correct?

TestHub · Accepted Answer

τ = M B sin ⁡ θ τ 1 = M B sin ⁡ 30 ° = 1 2 M B τ 2 = M B sin ⁡ 60 ° = 3 2 M B τ 3 = M B sin ⁡ 90 ° = M B τ 4 = M B sin ⁡ 135 ° = 1 2 M B 1 > 3 2 > 1 2 > 1 2 ∴ τ 3 > τ 2 > τ 4 > τ 1

Physics - Magnetism Question with Solution | TestHub

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