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प्रश्न
In which of the following case does the electromagnetic induction occur?
पर्याय
A current is started in a wire held near a loop of wire.
The current is switched off in a wire held near a loop of wire.
A magnet is moved through a loop of wire.
A loop of wire is held near a magnet.
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उत्तर
- A current is started in a wire held near a loop of wire.
- The current is switched off in a wire held near a loop of wire.
- A magnet is moved through a loop of wire.
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संबंधित प्रश्न
State Lenz’s Law.
A conductor is moved in a varying magnetic field. Name the law which determines the direction of current induced in the conductor.
The direction of induced current is obtained by ______.
A coil of 25 turns is pulled in 0.05 s between the poles of a magnet, where its area includes `21 xx106-6 "Wb" "to" 1 xx 10^-6 "Wb"`. The average e.m.f. is ______.
Magnetic flux passing through a coil is initially 6 x 10-4 Wb. It reduces to 10 % of its original value in 't' second. If the e.m.f. induced is 0.54 mV then 't' in second is ____________.
The direction of the magnetic field around a straight conductor carrying current can be determined by ______.
The laws of induction were given by ______.
Express Faraday-Lenz's law of electromagnetic induction in an equation form.
Name the principle of AC generator.
State two factors on which the magnitude of induced e.m.f. in a coil depend.
