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Related Questions

• Faraday's laws are consequence of conservation of

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• A magnetic field of $2 \times 10^{– 2} T$ acts at right angles to a coil of area 100 cm2 with 50 turns. The average emf induced in the coil is 0.1 V, when it is removed from the field in time t. The value of t is

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• An inductance L and a resistance R are first connected to a battery. After some time the battery is disconnected but L and R remain connected in a closed circuit. Then the current reduces to 37% of its initial value in

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• If a current of 3.0 amperes flowing in the primary coil is reduced to zero in 0.001 second, then the induced e.m.f. in the secondary coil is 15000 volts. The mutual inductance between the two coils is

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• A rectangular coil of 300 turns has an average area of average area of $25\;cm \times 10\;cm.$ The coil rotates with a speed of 50 cps in a uniform magnetic field of strength $4 \times {10^{ - 2}}T$ about an axis perpendicular of the field. The peak value of the induced e.m.f. is (in volt)

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