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Related Questions

• A coil of $N$ turns and mean cross-sectional area $A$ is rotating with uniform angular velocity $\omega$ about an axis at right angle to uniform magnetic field $B$. The induced e.m.f. $E$ in the 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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• In a step up transformer, 220 V is converted into 200 V. The number of turns in primary coil is 600. What is the number of turns in the secondary coil

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• A loss free transformer has 500 turns on its primary winding and 2500 in secondary. The meters of the secondary indicate 200 volts at 8 amperes under these conditions. The voltage and current in the primary is

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• A coil has an inductance of 2.5 H and a resistance of 0.5 r. If the coil is suddenly connected across a 6.0 volt battery, then the time required for the current to rise 0.63 of its final value is

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