JEE Previous Year Question

A square shaped coil of area 70 having 600 turns rotates in a magnetic field of 0.4 , about an axis which is parallel to one of the side of the coil and perpendicular to the direction of field. If the coil completes 500 revolution in a minute, the instantaneous emf when the plane of the coil is inclined at 60° with the field, will be ____ V,

Topic: JEE PYQ

Answer: 44. Full step-by-step solution below.

Correct answer: 44

Solution

(44)
N = 600, A = 70 x 10-4 , B = 0.4T
rad / s
E= NAB sint
t is angle b/w &
= 600 x 70 x 10-4 x 0.4 x
= 44V

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