- Acharging of a body with a positive charge
- Bproduction of current by relative motion between a magnet and a coil
- Crotation of the coil of an electric motor
- Dgeneration of magnetic field due to a current carrying solenoid
Explanation:
Electromagnetic induction is the production of current by relative motion between a magnet and a coil.The phenomenon of producing electric current in a conductor by moving it perpendicular to a magnetic field or vice -versa, is called electro magnetic induction.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
and
are the electrical conductivities of Ge and Na respectively. If these substances are heated, then
|
(a) Both |
(b) |
|
(c) |
(d) Both |
A point charge q is placed at a distance a/2 directly above the centre of a square of side a. The electric flux through the square is
|
(a) |
(b) |
(c) |
(d) |
The current in a coil changes from 4 ampere to zero in 0.1 s. If the average e.m.f. induced is 100 volt, what is the self inductance of the coil
|
(a) 2.5 H |
(b) 25 H |
(c) 400 H |
(d) 40 H |