Question # 1

Special organs called ampullae of lorenzenite are present in.

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Bats

Cats

Dogs

Sharks

The quantity time constant RC has units of.

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Charge

Time

Capacitance

Resistance

Farad is defined as

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"Coulomb/Volt

Ampere /Volt

Coulomb /Joule

Volt/Coulomb

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

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

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

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 process of copying is:

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Axillugraphy

Chromatography

Xerography

Spectrography

The electric field lines are closer where the field is

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Strong

Weak

Uniform

Variable

The capacitance of a capacitor depends upon.

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Thickness of plates

Charges on the plates

Voltage applied

Geometry of the capacitor

In photocopier, then drum is coated with layer of.

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Aluminium

Copper

Selenium

silver

S.I unit of strength of electric field is

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J/C

C/V

V/C

N/C

Net charge enclosed by Gaussian surface is:

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zero

maximum

depend on intensity

none of all

Due to polarization, electric field E.

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Increase

Decrease

First increases then decreases

Remain same

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

Coulomb /volt is called.

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Farad

Ampere

Joule

Henry

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

An ECG records the _____ between points on human skin generated by electric process i the heart.

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Heart beat

Pulse rate

Pressure

Voltage

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

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