Question # 1

Electric potencial of earth is taken to be zero because the earth is good:

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Semiconductor

Conductor

Insulator

Dielectric

If a charged body is moved against the electric field it will gain.

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P.E.

K.E.

Mechanical energy

Electrical potential energy

Concept of the electric field lines is introduced by

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Coulomb

Faraday

Einstein

Joseph henry

Two oppositely charged balls A and B attract the third ball C, when placed near them turn by turn The third ball C must be.

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Positively charged

Negatively charged

Electrically neutral

Positively and negatively charged

The negative of the potential gradient is

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Electrostatic force

Electromotive force

Potential difference

Electric field intensity

The middle region of electric field is:

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Maximum field spot

Zero field spot

Perpendicular field spot

All of above

Two metallic sphere of radius 2 cm and 4 cm get equal quantity of charge. Which has greater surface charge density ?

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2^nd sphere

Both have same

First sphere

None of these

SI unit of electric flux is.

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NmC¹

Nm^-1 C¹

Nm²C^-1

Nm³C²

When the medium is insulator the elecrostatic force between the charges is

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Decreased

Zero

Increased

None of above

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

Total flux through a closed surface depends on.

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Shape of surface

Medium only

Charge enclosed only

Charge and Medium

If the medium between the charges is not free space then electrostatic force will.be

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Increase

Decrease

Remain same

None of these

A changing electric flux creates.

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Electric fields

Gravitational

Magnetic field

Electric charge

Electro encephalon graph is the diagnostic test for the working of.

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Eye

Heart

Brain

Lungs

Selenium is

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Insulator is dark

Insulator in light

Conductor in dark

Semi conductor in dark

Flux through any closed surface is:

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1/ε²_∘ times the total charge enclosed in it

ε²_∘ time the total charge enclosed in it

1/ε_∘ ties the total charge enclosed in ti

ε_∘ time the total charge enclosed in it

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

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

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