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

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Question # 1

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

Question # 2

A rheostat can e used:

Question # 3

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

Question # 4

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

Question # 5

The value of relative permittivity of different dielectrics are:

Question # 6

In case of metallic conductors, the charge carriers are

Question # 7

The current that flows through the coil of a motor causes:

Question # 8

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:

Question # 9

Which of the following substances has got positive temperature coefficient of resistance?

Question # 10

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

Question # 11

The flux through a closed surface depends upon:

Question # 12

An important part of inkjet printer is:

Question # 13

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

Question # 14

Most practical application of electricity involve

Question # 15

The inkjet printer ejects a thin stream of:

Question # 16

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

Question # 17

The obvious effect/s of current is/are:

Question # 18

An eV is unit of:

Question # 19

The quantity having the same unit as that of emf is:

Question # 20

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

Question # 21

In a metal, the valence electrons are:

Question # 22

The best conductor is:

Question # 23

In case of metallic conductors, the change carries are:

Question # 24

In a metal, the valence electrons are:

Question # 25

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

Question # 26

The emf is measured in:

Question # 27

Aluminum is a:

Question # 28

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

Question # 29

When certain area A is held parallel to the field lines, then:

Question # 30

The conventional current is the name given to current due to flow of:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

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
2 Gaussian surface is always:
A.

Rectangular

B.

Spherical

C.

Cylindrical

D.

Box shape
3

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple
4 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
5 The quantity having the same unit as that of emf is:
A. Force
B. Energy
C. Potential
D. Current
6 In gases, the charge carries are:
A.

Electrons

B.

Positive ions

C.

Negative ions

D.

Both (A) and (C)
7 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
8 In gases, the charge carriers are:
A. Electrons
B. Positive ions
C. Negative ions
D. Both A and C
9 Aluminum is a:
A.

Good insulator

B.

Bad conductor

C.

Both (A) and (B)

D.

Excellent conductor
10

Conversion of chemical energy to electrical energy can be achieved by:
A.

Primary cell

B.

Secondary cell

C.

Both (A) and (B)

D.

Photovoltaic cell

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