Question # 1

Which material should be inserted between the plates of a capacitor in order to increase its capacitance.

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Copper

Mica

Iron

Tin

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

A force of 0.01 N is exerted on a charge 1.2 x 10^-5 C at a certain point. The electric field at that point is

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1.2 x 10⁴ N/C

1.2 x 10⁴ C/N

8.3 x 10² N/C

8.3 x 10^-2 N/C

Due to polarization, electric field E.

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Increase

Decrease

First increases then decreases

Remain same

A proton is about 1840 time than an electron. When it is accelerated by a potencial difference if 1 kV, its kinetic energy will be:

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1884 ke V

1/1840 keV

1 keV

920 keV

The photo copying process is called

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Xerography

Inkjet Printer

Both (a) and (b)

None of these

Capacitance of a capacitor does not depend upon.

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Distance between plates

Area of plates

Electric field between plates

Medium between plates

Force per unit charge is called:

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Gravitational force

Electric field intensity

Coulomb's force

None of these

Electric potential at a distance ''r'' from ''q'' is:

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V_r = 1/54πε_∘q/r₂

Vr=1/4πε_∘²q/r

V_r=1/4πε_∘2q/r

V_r=1/4πε_∘q²/r

The middle region of electric field is:

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Maximum field spot

Zero field spot

Perpendicular field spot

All of above

The "toner" of photocopier is given:

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Positive charge

Negative charge

Remains neutral

All of above

The electric intensity at infinite distance from the point charge is

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Infinite

Zero

Positive

Negative

Closeness of the electric field lines is the measure of.

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Direction of field

Strength of field

Potential difference

Uniformity of field

The electric intensity due to two oppositely charged plates is

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None of these

The electrical intensity is equal to:

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-Δr/Δv

Δv/Δr

Δv/Δv

-Δv/Δr

The electric field lines are closer where the field is

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Strong

Weak

Uniform

Variable

Net charge enclosed by Gaussian surface is:

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zero

maximum

depend on intensity

none of all

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

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Decreased

Zero

Increased

None of above

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

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