Question # 1

Another mean of electric potential energy per unit charge is given by:

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Electric intensity

Potential gradient

Electric Flux

Potential difference

None of these

When two spherical conducting balls at different potentials are joined by a metallic wire, after some time:

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Both the conductors are at the same potential

Potential difference across the conductors remain constant

Potential difference across the conductors becomes zero

Both (A) and (B)

Both (A) and (C)

As the current flow through the wire:

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It generates heat in the wire

It produces sound in the wire

Resistance of the wire decreases

Voltage across the ends is increased

None of these

The current of 1 ampere is passing through a conductor. The charge passing through it in half a minute is:

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One coulomb

0.5 coulomb

30 coulomb

2 coulombs

None of these

The magnitude of chemical Effects depends upon:

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Nature of liquid

Quantity of Electricity passed through the liquid

Color of the liquid

Both (A) and (C)

Both (A) and (B)

The obvious effect/s of current is/are:

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Heating effect

Magnetic effect

Chemical effect

Both (C) and (B)

All of these

The effects of bends in a wire on its electrical resistance are:

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Zero

Much larger

Larger

Smaller

None of these

A field free region is found:

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Near the outer surface of a hollow charged metal sphere

In the interior of solid metal uncharged sphere

In the interior of solid metal charged sphere

Both (A) and (B)

Both (A) and (C)

The charge carries in the electrolyte are:

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Positive ions

Negative ions

Either (A) or (B)

Both (A) and (B)

Neither (A) nor (B)

When a constant potential difference is applied across the conductor, the drift velocity of electrons:

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Increases

Decreases

Remains the constant

Either of these

None of these

SI unit of current describes the flow of charge at the rate of

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One ampere per second

One coulomb per second

One electron per second

6.25 x 10¹⁸electrons per second

Both B and D

In a metal, the valence electrons are:

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Attach to individual atoms

Not attached to individual atoms

Free to move within the metal

Both (A) and (C)

Both (B) and (C)

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

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Cylinder

Box

Sphere

Circle

Rectangle

The fourth band is a:

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Silver band

Red band

Gold band

Either A or C

Either A or B

The third band of the colour code:

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Gives the number of zeroes

Is decimal multiplier

Gives the resistance tolerance

Gives the third digit

Both (A) and (B)

In case of metallic conductors, the charge carriers are

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Protons

Electrons

Antiprotons

Positrons

Both A and B

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