A square shaped coil of area 70 cm 2 having 600 turns rotates in a magnetic field of 0.4 wbm -2 , 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, 
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(44)
N = 600, A = 70 x 10 -4 m 2 , B = 0.4T
rad / s
E= NAB 
sin 
t
t is angle b/w 
& 
= 600 x 70 x 10 -4 x 0.4 x 
= 44V
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