Question # 1

Electromagnetic induction is exactly according to law of:

Choose an answer

Momentum

Charge

Energy

Mass

Energy density in an inductor is.

Choose an answer

Directly proportional to magnetic field

Directly proportional to square of magnetic field

Inversely proportional to magnetic field

Inversely proportional to square of magnetic field

Lenz's law was given by Heinrich lenz in:

Choose an answer

1894

1904

1854

1834

If a step up transformer were 100% efficient the primary and secondary winging's would have the same.

Choose an answer

Current

Power

Voltage

Direction of winding

Commentator was invented by

Choose an answer

Henry

Ousted

Maxwell

William sturgeon

The induced emf in a coil is proportional to:

Choose an answer

Magnetic flux through the coil

Rate of change of Magnetic flux through the coil

Area of the coil

Product of magnetic flux flux and area of the coil

Efficiency of transformer does not affected by

Choose an answer

Input voltage

Core of transformer

Insulation between sheet

Resistance of coils

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

When the back emf is zero, its draws.

Choose an answer

Zero current

Minimum current

Maximum current

Steady current

The Direction of induced current is always so as to oppose the change which causes the current, is:

Choose an answer

Faraday's law

Lenz's law

Ohm's law

Kirchhoff' s1ast rule

The working principle of transformer is.

Choose an answer

Self induction

Faraday's law

Mutual induction

Electromagnetic induction

If the coil is wound on iron core, the flux through it.

Choose an answer

Decreases

Becomes zero

Increases

Remains constant

The direction of induced current is always so as to oppose the change which causes the current is:

Choose an answer

Faraday's law

Lenz's law

Ohm's law

Kirchhoff's 1st rule

DC generator by william Sturgeon in:

Choose an answer

1894

1961

1834

1961

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

Choose an answer

Armature

Magnet

Slip rings

Commutator

Unit of self inductance is

Choose an answer

Weber

Tesla

Henry

Farad

By winding the coil around a less magnetic core, self induction.

Choose an answer

Will increase

Will decrease

Remain same

First increase then decrease

More Classes

Other Links

Physics Fsc Part 2 Chapter 4 Online Test 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