Question # 1

Charge carriers in electrolytes are.

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Protons

Electrons

Holes

Positive and Negative ions

The photo copying process is called

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Xerography

Inkjet Printer

Both (a) and (b)

None of these

A capacitor stores energy in the form of.

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Magnetic field

Heat energy

Electrical energy

Mechanical energy

Coulomb /volt is called.

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Farad

Ampere

Joule

Henry

If F1 and F2 are teh magnetic forces acting on a particle and electron respectively when moving perpendicular to the magnetic field then.

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F1=F2

F1>F2

F1<F2

F1 = 4F2

The fact that electric field exist in space around an electrical charge is

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Electrical property

Gravitational property

Intrinsic property of nature

Extrinsic property of nature

If both the magnitude of charges and distance between them is doubled, then coulomb's force will be.

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Doubled

Hlaf

Remain same

One fourth

A changing electric flux creates.

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Electric fields

Gravitational

Magnetic field

Electric charge

Selenium is

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Insulator is dark

Insulator in light

Conductor in dark

Semi conductor in dark

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

When some di electric is inserted between the plates of a capacitor, then capacitance.

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Decreases

Increases

Becomes zero

Becomes infinity

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

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Parallel

Flat

Curved

Spherical

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

Net charge enclosed by Gaussian surface is:

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zero

maximum

depend on intensity

none of all

The toner of printer is given

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Positive charge

Negative charge

Neutral

First positive then negative

Total flux through a closed surface depends on.

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Shape of surface

Medium only

Charge enclosed only

Charge and Medium

Selenium is a

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Insulator

Photoconductor

Conductor

First insulator then conductor

Which one is photo conductor.

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Copper

Selenium

Mercury

Aluminium

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

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