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Q.

A coil with 200 turn and cross sectional area 0.10 m2 is rotated at 30 rev / min and it is placed in a uniform magnetic field of 0.02 T perpendicular to the axis of rotation of the coil. The maximum voltage generated in the coil is

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a

2.16 V

b

4.12 V

c

1.26 V

d

3.24 V

answer is A.

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Detailed Solution

Here

v=0.5Hz,N=200,A=0.1m2 and B=0.02Tε0=NBA(2πv)=200×0.02×0.1×(2π×0.5)=1.26V

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