Class 12 Physics Chapter 6 Online Test – Electromagnetic Induction

The role of self induction is equivalent to

Lenz's law is associated with

Instrument which converts mechanical energy into electrical energy is -

The rate of change of magnetic flux in a loop is equal to -

The relative motion between the magnet and the coil that is responsible for generation of

A circular coil is held in vertical plane. Bar magnet is taken towards it with north pole towards coil. Direction of current as scene from the side of magnet is

The law of electromagnetic induction was discovered by

Lenz's law is derived from

Which physical quantity has SI unit Henry ?

SI unit of mutual induction is -

SI unit of magnetic flux is

The principle of mutual induction is used in

Direction of Eddy current is obtained from -

When the rate of change of current is unity, The induced emf is equal to

The working of dynamo is based on the principle of

Lenz's law is the result of which principle of conservation?

If a denial cell is connected across the primary coil, the change in flux in the secondary will be

Factors that affect the voltage generation in faraday's experiment is

Magnetic flux is the

The current passing through a choke coil is 5H age decreasing at the rate of 3A/s . The emf induced in coil is

When current in a coil changes from 5A to 2A in 0.1s then average voltage of 50V is produced. The self induction of the coal is

The magnetic flux linked with a coil is changed from 1Wb to 0.1Wb in 0.1s. The induced emf is

Calculate the magnetic flux produced when the magnetic field is parallel to the surface area.

Calculate the magnetic flux when the magnetic field is perpendicular to the surface area .

Which of the following is consequences of the law of energy conservation?

The phenomena called electromagnetic induction was first investigated by

Magnetic flux per unit area is

An induction coil gives

To convert mechanical energy into electrical energy are can use

An inductor may store energy in its

The mutual induction of two nearby coins is 1.5 H. If in one of these coils, the current grows from zero to 20A in 0.5s, the flux linked with second qual changes by

The SI unit of magnetic flux is

Inductance is the

The working of an induction coil is based on the principle of

The law related with electromagnetic induction is called