Question

A cool has 2000 turns and Area of 70 cm^2.The Magnetic field perpendicular to the plane of the coil is 0.3 Wb/m^2 and takes 0.1 sec rotate through 180 .The value of the induced EMF Will be

Answer 1

Change in flux =2BAN

∴ Induced e.m.f. =2×0.3×200×70×10−4​/0.1

                            =8.4V

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