Question # 1

Self inductances of solenoid is

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Directly proportional to the current flowing through the wire

Directly proportional to its length

Inversely proportional to area of corss section

Directly proportional to number of turns

The main causes of power losses in a generator are.

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Pulsatng current

Eddy current

Magnetic current

Both B and C

The dot product of electric intensity and area of a surface is equal to.

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Magnetic flux

Electric flux

Motional emf

Induced emf

A charged capacitor has charge on its

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Outside surface

Inner surface

Surroundings

Mid point

The building up of electric charge on the surface of objects is termed as.

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Static electricity

Electric charge

Electric current

Electrostatic induction

Which of the following is an example of induced magnetism.

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A compass needle pointing north

A north pole attracting iron filings

A northpole repelling a north pole

The coil of a motor turning in a magnetic field.

When a positive charge is allowed to move from positive to negative plate, then it will gain

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P.E.

K.E

Gravitational energy

Electrical P.E.

What is the term for an motion of charge from one region to another.

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electric charge

Electric current

Electric field

Electric potential

Which of these is not a method of charging.

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Friction or rubbing

Induction

Contact or touching

Convection

In a charged capacitor the energy resides

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In the negative plate

In the positive plate

In the field between the plates

Around the edge of the plates

Para magnetism is.

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A distrotion effect

An orientation effect

A skin effect

A resistance

Relative permeability is

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The ratio of flux density in a material to that for a vacuum

Very large for paramagnetic materials

small for paramagnetic materials

None of these

On which parameter the time required to charge a capacitor depends upon.

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magnitude of charge

Applied potential difference

Capacitances

Time constant

The energy supplied in charging a capacitor resides after the charging in.

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The magnetic field

The electric field

the battery

The moving conduction charges

A heart coil is out into two equal parts and only one part is now used in the heater The heat generated will be.

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Halved

One fourth

Doubled

4 times

The SI unit of magnetic flux is

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gauss

Maxwell

Oersted

Water

Since a diode permits the flow of current only in one direction so it can be used as.

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An oscillator

A rectifier

A phot deflector

A transistor

if two conductors in the same vicinity each possess one coulomb of charge of opposite sign when one volt potential difference in established between them we may say they possess

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A capacitance of one henry

An inductance of one henry

An impedance of one ohm

A capacitance of one farad

_{When a charged particle moves through a magnetic field it suffers a change in its}

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Charge

Mass

Energy

Direction of motion

When the battery is being charged its terminal potential difference than its emf is.

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Less

Greater

Double

Squared root

A wire surrounded by a concentric cylindrical metal shield constitutes a.

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Spherical capacitor

Parallel plate capacitor

Cylindrical capacitor

Cylindrical condenser

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PPSC Physics Chapter 6 Electricity and Magnetism MCQs With Answers

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