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Related Questions

• In a transformer, the coefficient of mutual inductance between the primary and the secondary coil is 0.2 henry. When the current changes by 5 ampere/second in the primary, the induced e.m.f. in the secondary will be

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• A metal conductor of length 1m rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth's magnetic field is $0.2 \times {10^{ - 4}}T$, then the e.m.f. developed between the two ends of the conductor is

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• A coil having an area $2{m^2}$ is placed in a magnetic field which changes from $1Wb/{m^2}$to $4Wb/{m^2}$in a interval of 2 second. The e.m.f. induced in the coil will be

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• A transformer is based on the principle of

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• A coil of self inductance 50 henry is joined to the terminals of a battery of e.m.f. 2 volts through a resistance of 10 ohm and a steady current is flowing through the circuit. If the battery is now disconnected, the time in which the current will decay to 1/e of its steady value is

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