Question # 1

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

Presence of dielectric between two charges always.

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Reduces the electric force

Enhance the electric force

Does not effect electric force

Double the electric force

The process of copying is:

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Axillugraphy

Chromatography

Xerography

Spectrography

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

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Parallel

Flat

Curved

Spherical

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

Coulomb's force is:

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Conservative force

None conservative force

Similar to frictional force

None of the above

If the potential difference across two plates of capacitor is doubled, then energy stored in it will be.

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Two times

Eight times

Four times

Remain same

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 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

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

An electric field cannot deflect

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X-rays

a-particles

ß-particles

None of these

The electric intensity due to two oppositely charged plates is

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None of these

Charge on electron is

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1.6 x 10^-19 C

1.6 x 10¹⁹C

1.6 x 10^-17C

1.6 x 10¹⁷C

If the distance between two charges is halved and charges are also doubled, then force between them will be.

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Two time

Four time

Eight time

Sixteen time

The absolute electric potential at a point distance 20 cm from a charge of 2 uC is.

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9 x 10² V

9 x 10³ V

9 x 10⁴ V

9 x 10 ⁵ V

The electrical intensity is equal to:

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-Δr/Δv

Δv/Δr

Δv/Δv

-Δv/Δr

Identify the practical application of electrostatic force.

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Inkjet printer

x rays

Laser

A.C. Generator

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

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

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