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The loop, having rotated by 45°, rotates clockwise another 30°, so that the normal to the plane points at an angle of 75° with respect to the direction of the magnetic field.

(a) Find the magnetic flux through the loop when ? = 75°. ?B = Wb

(b) Find the change in magnetic flux during the rotation from 45° to 75°. ??B = Wb

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