Question # 1

Lenz's law is a consequence of the law of conservation of

Choose an answer

Charge

Momentum

Energy

Angular momentum

The negative sign with induced emf in Faraday's law is in accordance with

Choose an answer

Lenz's law

Amperes law

Boyle's law

Gauss law

Commutator was invented by:

Choose an answer

William bills

William Gates

William tells

William Sturgeon

A 50 mH coil carries a current of 2.0 a , then energy stored in tis magnetic field is.

Choose an answer

0.1 J

10 J

100 J

1000 J

SI unit of hennery which is.

Choose an answer

VSA-1

VS-1 A

VS-1A-1

VSA

A simple device that prevents the direction of current from changing is called.

Choose an answer

Commutator

Rotor

Armature

Detector

Electromagnetic induction is exactly according to law of:

Choose an answer

Momentum

Charge

Energy

Mass

The working principle of transformer is.

Choose an answer

Self induction

Faraday's law

Mutual induction

Electromagnetic induction

The winding of the electromagnet in motor are usually called.

Choose an answer

Magnetic coils

Field coils

Electric coils

electric o electric coils

The device in which induced emf is statically induced emf is:

Choose an answer

Transforms

AC generator

Alevator

Dynamo

Which one is not present in A.C. generator.

Choose an answer

Armature

Magnet

Slip rings

Commutator

If 10 A current passes through 100 mH inductor, then energy stored is.

Choose an answer

100 J

5 J

20 J

Zero

The north pole of a magnet is brought near a metallic ring. The direction of induced current in the ring will be:

Choose an answer

Antoclockwise

Clockwise

First Clockwise and then Antoclockwise

First anticlockwise and then Clockwise

The Lenz's law fulfils.

Choose an answer

Law of conservation of energy

Law of conservation of charge

Law of conservation of momentum

Kirchhoff's law

If speed of rotation of a generator is doubled the output voltage will be.

Choose an answer

Remain same

Double

Four time

One half

The Lenz's law is also statement of:

Choose an answer

Law of conservation of mass

Law of conservation of charge

Law of conservation of energy

Law of conservation of momentum

Which of the following converts electrical energy into mechanical energy.

Choose an answer

Transformer

A.C. generator

D.C. generator

D.C. motor

DC generator by william Sturgeon in:

Choose an answer

1894

1961

1834

1961

More Classes

Other Links

Ics Part 2 Physics Chapter 4 Test Online MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer