ECAT Pre Engineering Physics Chapter 13 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 13 Current Electricity

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 13 Current Electricity

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Physics ECAT Pre Engineering Chapter 13 Current Electricity

00:00
Question # 1

In a metal, the valence electrons are:

Question # 2

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

Question # 3

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

Question # 4

As the current flows through the wire

Question # 5

If the ends of a wire are connected to a battery an electric field E will be set up at:

Question # 6

In case of metallic conductors, the change carries are:

Question # 7

In case of metallic conductors, the charge carriers are

Question # 8

An important part of photocopier is:

Question # 9

Static electricity is produced by the transfer of:

Question # 10

The obvious effect/s of current is/are:

Question # 11

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

Question # 12

The inkjet printer ejects a thin stream of:

Question # 13

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

Question # 14

As the current flow through the wire:

Question # 15

Electric flux is:

Question # 16

Most practical application of electricity involve

Question # 17

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

Question # 18

The emf is measured in:

Question # 19

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

Question # 20

An ideal voltmeter has:

Question # 21

The flux through a closed surface depends upon:

Question # 22

The passage of current is accompanied by a magnetic field in the surrounding space:

Question # 23

The rate at which the free electrons pass through any section of a metallic wire from right to left is:

Question # 24

The magnitude of chemical Effects depends upon:

Question # 25

The strength of magnetic field at certain points around a wire depends upon:

Question # 26

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

Question # 27

The third band of the colour code:

Question # 28

Flux through a closed surface of any shape and flux through the surface of a sphere drawn around a charge are:

Question # 29

The interior of a hollow charged metal sphere is a region which:

Question # 30

Which instrument is expensive and difficult to use?

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 The conventional current is the name given to current due to flow of
A. Positrons
B. Positive charges
C. Negative charges
D. Both A and C
2 Field lines are closer to each other in the region where the field is:
A.

Stronger

B.

Weaker

C.

Much weaker

D.

Absent
3 If the ends of a wire are connected to a battery an electric field E will be set up at:
A.

The ends of the wire only

B.

Mid points of the wire only

C.

Every point within the wire

D.

At nodes only
4

The device which can convert heat energy into electrical energy is called:
A.

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple
5 Gaussian surface is always:
A.

Rectangular

B.

Spherical

C.

Cylindrical

D.

Box shape
6 An electric field is generated along the wire when:
A.

Its resistance is very high

B.

A constant potential is maintained across the wire

C.

Net current through the wire is zero

D.

A constant potential difference is maintained across the wire
7 A field free region is found:
A.

Near the outer surface of a hollow charged metal sphere

B.

In the interior of solid metal uncharged sphere

C.

In the interior of solid metal charged sphere

D.

Both (A) and (B)
8 When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:
A.

Decreases

B.

Increases

C.

Remains the constant

D.

Either of these
9

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:
A.

Same

B.

Different

C.

Opposite to each other

D.

At 60º with each other
10 The number of field lines passing through unit area held perpendicular to the field lines represent:
A.

Flux in that region

B.

Intensity of the field

C.

Charge

D.

Area of the region

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