Faraday's Law of Electromagnetic Induction

Question 1: difficult

A rectangular coil ABCD is rotated anticlockwise with a uniform angular velocity about the axis
shown in diagram below. The axis of rotation of the coil as well as the magnetic field B are
horizontal. The induced e.m.f. in the coil would be maximum when

1. The plane of the coil is horizontal

2. The plane of the coil makes an angle of 45° with the magnetic field

3. The plane of the coil is at right angles to the magnetic field

4. The plane of the coil makes an angle of 30° with the magnetic field

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