Electromagnetic Induction and Alternating Current

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Question 1 of 15

A 20-turn square coil of side 8.0 mm is pivoted at the centre and placed in a magnetic field of flux density 0.010 T, such that two sides of the coil are parallel to the field and two sides are perpendicular to the field. A current of 5.0 mA is passed through the coil. What is the magnitude of the torque acting on the square coil?

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0.1 x 10⁴ N m

0.1 x 10^-8 N m

6.4 x 10^-8 N m

62.5 x 10⁸ N m

0.025 x 10^-4 N m

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