1.

A 800 turn coil of effective area `0.05 m^(2)` is kept perpendicular to a magnetic field `5xx10^(-5)` T. When the plane of the coil is rotated by `90^(@)` around any of its coplanar axis in 0.1 s, the emf induced in the coil will be:A. `0.012 V`B. `0.05 V`C. ``0.1 V`D. `0.2 V`

Answer» Correct Answer - D
`e=(-NBA(costheta_(2)-costheta_(1))/(Deltat)`
`=-(500x4xx10^(-4)xx0.1(cos90-cos0))/(0.1)=0.2V`


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