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Related Questions

• The coefficient of mutual inductance of two coils is 6 mH. If the current flowing in one is 2 ampere, then the induced e.m.f. in the second coil will be

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• The ratio of secondary to the primary turns in a transformer is $3 : 2$. If the power output be $P$, then the input power neglecting all loses must be equal to

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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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• The inductance of a closed-packed coil of 400 turns is 8 mH. A current of 5 mA is passed through it. The magnetic flux through each turn of the coil is

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• Magnetic flux in a circuit containing a coil of resistance $2\Omega $ changes from 2.0 Wb to 10 Wb in 0.2 sec. The charge passed through the coil in this time is

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