Question # 1

Concept of the electric field lines is introduced by

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Coulomb

Faraday

Einstein

Joseph henry

the force between two charge is 28 N. If paraffin wax of relative permittivity 2.8 is introduced between the charges as medium, then the force reduces to.

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25 N

20 N

10 N

15 N

Gauss's law can only be applied to.

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A curved surface

A flat surface

A closed surface

A surface of any shape

If the separation between the plates of a capacitor is doubled then its capacitance become.

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Double

Half

One fourth

Three times

The quantity time constant RC has units of.

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Charge

Time

Capacitance

Resistance

A charge Q is divided into tweo parts q and Q-q and seperated by a distance R. The force of equilibrium between them will be maximum when:

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q=Q/4

q=Q/2

q=Q

None of these

The electric intensity at infinite distance from the point charge is

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Infinite

Zero

Positive

Negative

The force of Neutron due to field of 10² N/C is.

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1.6 x 10^-17N

1.6 x 10^-19N

Zero

1.6 x 10^-21N

If a charge body moved against the electric field it will again

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Potential energy

K.E

Mechanical Energy

Electric potential energy

The negative of the potential gradient is

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Electrostatic force

Electromotive force

Potential difference

Electric field intensity

The "toner" of photocopier is given:

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Positive charge

Negative charge

Remains neutral

All of above

The toner of printer is given

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Positive charge

Negative charge

Neutral

First positive then negative

One electron volt is equal to.

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1.6 x 10^-19 Joule

1.6 x 10^-19Coulomb

1.6 x 10^-12N

1.6 x 10¹⁸Joule

The net charge on a capacitor magnitude of charge of charge

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Infinity

2 q

Q/2

Zero

Selenium is a

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Insulator

Photoconductor

Conductor

First insulator then conductor

For computation of electric flux, the surface area should be.

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Parallel

Flat

Curved

Spherical

Dielectric constant _εr for air is:

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1

1.006

1.0002

1.0006

The product of resistance and capacitanc eis.

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Velocity

Force

Acceleration

Time

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Physics ICS Part 2 Chapter 12 Online MCQ's Test MCQs With Answers

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