ECAT Pre General Science Physics Chapter 13 MCQ Test With Answer

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

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

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ECAT Pre General Science Physics Chapter 13 Current Electricity

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Question # 1

In case of metallic conductors, the charge carriers are

Question # 2

Most practical applications of electricity involve

Question # 3

The positive charge moving in one direction is equivalent in all external affects to a:

Question # 4

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

Question # 5

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

Question # 6

The fourth band is a:

Question # 7

Aluminum is a:

Question # 8

The charge carries in the electrolyte are:

Question # 9

Gaussian surface is always:

Question # 10

The example/s of non-electrical energy to electrical is/are:

Question # 11

Kirchhoff's first rule is also called:

Question # 12

The third band of the colour code:

Question # 13

A rheostat can e used:

Question # 14

The magnitude of chemical Effects depends upon:

Question # 15

Which instrument is expensive and difficult to use?

Question # 16

In case of metallic conductors, the change carries are:

Question # 17

Magnetic effect of current is used:

Question # 18

In case of metallic conductors, the charge carriers are

Question # 19

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

Question # 20

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

Question # 21

Two dissimilar metals joined at their ends kept at constant temperature constitute:

Question # 22

The value of relative permittivity of different dielectrics are:

Question # 23

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

Question # 24

In a metal, the valence electrons are:

Question # 25

Static electricity is produced by the transfer of:

Question # 26

An inkjet printer uses in its operation:

Question # 27

The earth’s potential and potential at infinity are taken:

Question # 28

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

Question # 29

The electric flux through any surface depends upon:

Question # 30

An ideal voltmeter has:

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Sr. # Question Answer
1 Another mean of electric potential energy per unit charge is given by:

A.

Electric intensity

B.

Potential gradient

C.

Electric Flux

D.

Potential difference
2 Which instrument is expensive and difficult to use?

A. Voltmeter

B. Potentiometer

C.CRO

D. Both A and C

3 The surface destiny of charge is defined is:

A.

Charge per volume

B.

Mass per volume

C.

Charge per area

D.

Mass per area
4 Selenium is:

A.

An insulator

B.

A conductor

C.

Insulator in the dark and becomes conductor when exposed to light

D.

Conductor in the dark only
5 The electric flux through any surface depends upon:

A.

Intensity of electric field

B.

Area of the surface

C.

Angle between intensity and area

D.

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

A.

Contain some magnitude of electric field

B.

Is full of electric field lines

C.

Is field-free region

D.

Either (A) or (B)
7 In case of metallic conductors, the charge carriers are

A. Protons

B. Electrons

C.Antiprotons

D. Positrons

8 In gases, the charge carries are:

A.

Electrons

B.

Positive ions

C.

Negative ions

D.

Both (A) and (C)
9 An important part of photocopier is:

A.

Toner cartridge

B. Deflection plates

C.

Charging electrode

D.

Print head
10 The charge carriers in an electrolyte are

A. Positive ions

B. Negative ions

C.Either A or B

D. Both A and B

11 Aluminum is a:

A.

Good insulator

B.

Bad conductor

C.

Both (A) and (B)

D.

Excellent conductor
12

Electric flux is:

A. Cross product of two vector

B.

Dot product of two vectors

C.

A vector quantity

D.

A scalar quantity
13 Gaussian surface is always:

A.

Rectangular

B.

Spherical

C.

Cylindrical

D.

Box shape
14 Magnetic effect of current is used:

A.

In electric motor

B.

To detect current

C.

To measure current

D.

All of these
15 In case of metallic conductors, the charge carriers are

A. Protons

B. Electrons

C.Antiprotons

D. Positrons

16

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

A.

One coulomb

B.

0.5 coulomb

C.

30 coulomb

D.

2 coulombs
17

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

A.

Greater than the speed at which they pass from left to right

B.

Less than the speed at which they pass from left to right

C.

The same speed at which they pass from left to right

D.

Any of above
18

In order to have a constant current through wire, the potential difference across its end should:

A.

Be zero

B.

Be maintained constant

C.

Goes on increasing

D.

Go on decreasing
19 Field lines are closer to each other in the region where the field is:

A.

Stronger

B.

Weaker

C.

Much weaker

D.

Absent
20 A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s

A. One coulomb

B. 0.5 coulomb

C.30 coulombs

D. 2 coulombs

21

In case of metallic conductors, the change carries are:

A.

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons
22 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
23 The third band of the colour code:

A. Gives the number of zeroes

B. Is decimal multiplier

C.Gives the resistance tolerance

D. Gives the third digit

24

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

A.

Greater than the speed at which they pass from left to right

B.

Less than the speed at which they pass from left to right

C.

The same speed at which they pass from left to right

D.

Any of above
25

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

A.

Zero

B.

Much larger

C.

Larger

D.

Smaller
26 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)
27 The current that flows through the coil of a motor causes

A. Its shaft to revolve

B. Its brushes to rotate

C.Motor to move

D. Its shaft to rotate

28 Most practical application of electricity involve

A.

Charges at the rest

B.

Charges in the motion

C.

Electrons at rest

D.

Atoms in motion
29

Electrostatics is the branch of physics which deals with the study of electro charges:

A.

At rest

B.

At rest under the action of electric forces

C.

In motion under the action of electric forces

D.

In motion
30 An eV is unit of:

A.

Potential

B.

Energy

C.

Work

D.

Power

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