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

Which instrument is expensive and difficult to use?

Question # 2

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

Question # 3

As the current flow through the wire:

Question # 4

An eV is unit of:

Question # 5

The fourth band is a:

Question # 6

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

Question # 7

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

Question # 8

An example of photoconductor is:

Question # 9

The obvious effect/s of current is/are:

Question # 10

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

Question # 11

The best conductor is:

Question # 12

The charge carriers in an electrolyte are

Question # 13

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

Question # 14

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

Question # 15

An important part of photocopier is:

Question # 16

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

Question # 17

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

Question # 18

Heating effect of current utilized in:

Question # 19

Xerography means:

Question # 20

The electric flux through any surface depends upon:

Question # 21

Gaussian surface is always:

Question # 22

A thermistor is a resistor which is:

Question # 23

Most practical application of electricity involve

Question # 24

The inkjet printer ejects a thin stream of:

Question # 25

Electrolysis is the study of conduction of electricity through:

Question # 26

The current that flows through the coil of a motor causes

Question # 27

The number of field lines passing through unit area held perpendicular to the field lines represent:

Question # 28

Electric flux is:

Question # 29

The third band of the colour code:

Question # 30

In case of metallic conductors, the charge carriers are

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 In gases, the charge carries are:
A.

Electrons

B.

Positive ions

C.

Negative ions

D.

Both (A) and (C)
2 The free electrons in metals:
A.

Are in random motion and their speed depends upon temperature

B.

Move in particular direction

C.

Move with speed of light

D.

Move such that their speed does not depend on their temperature
3 Electrolysis is the study of conduction of electricity through:
A. Solids
B. Liquids
C. Gases
D. Plasma
4 The value of relative permittivity of different dielectrics are:
A.

Equal

B.

Different

C.

Greater than one

D.

Smaller than one
5 The charge carriers in an electrolyte are
A. Positive ions
B. Negative ions
C. Either A or B
D. Both A and B
6 Most practical application of electricity involve
A.

Charges at the rest

B.

Charges in the motion

C.

Electrons at rest

D.

Atoms in motion
7 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
8 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
9

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple
10 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

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