Advertisements
Advertisements
प्रश्न
In which of the following case does the electromagnetic induction occur?
विकल्प
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.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
In the following diagram an arrow shows the motion of the coil towards the bar magnet.
(1) State in which direction the current flows, A to B or B to A?
(2) Name the law used to come to the conclusion.

A conductor is moved in a varying magnetic field. Name the law which determines the direction of current induced in the conductor.
What is Lenz’s law?
Why does it become more difficult to move a magnet towards a coil when the number of turns in the coil has been increased?
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 ______.
The laws of induction were given by ______.
Define the right-hand thumb rule.
For which angle between two equal vectors `vec"A"` and `vec"B"` will the magnitude of the sum of two vectors be equal to the magnitude of each vector?
State the use of the principle of electromagnetic induction.
