Class 12 Physics Chapter 6 Online Test – Electromagnetic Induction

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 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 law of electromagnetic induction was discovered by

Instrument which converts mechanical energy into electrical energy is -

SI unit of magnetic flux is

Lenz's law is associated with

Inductance is the

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

Which physical quantity has SI unit Henry ?

The SI unit of magnetic flux is

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

The role of self induction is equivalent to

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

The law related with electromagnetic induction is called

Magnetic flux is the

The phenomena called electromagnetic induction was first investigated by

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

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

An induction coil gives

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 working of an induction coil is based on the principle of

Lenz's law is derived from

The working of dynamo is based on the principle of

Direction of Eddy current is obtained from -

The principle of mutual induction is used in

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

SI unit of mutual induction is -

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

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

To convert mechanical energy into electrical energy are can use

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

Magnetic flux per unit area is

An inductor may store energy in its

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

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