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

The free electrons in metals:

Question # 2

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

Question # 3

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

Question # 4

The charge carries in the electrolyte are:

Question # 5

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

Question # 6

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

Question # 7

Which instrument is expensive and difficult to use?

Question # 8

Field lines are closer to each other in the region where the field is:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

A thermistor is a resistor which is:

Question # 14

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

Question # 15

In a metal, the valence electrons are:

Question # 16

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

Question # 17

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 # 18

The magnitude of chemical Effects depends upon:

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

The obvious effect/s of current is/are:

Question # 23

An example of photoconductor is:

Question # 24

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

Question # 25

The value of relative permittivity of different dielectrics are:

Question # 26

An ideal voltmeter has:

Question # 27

The inkjet printer ejects a thin stream of:

Question # 28

Most practical applications of electricity involve

Question # 29

In case of metallic conductors, the charge carriers are

Question # 30

Most practical application of electricity involve

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

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

No lines cross this area

B.

Maximum lines pass through this area

C.

The number of lines are between zero and maximum

D.

Both (A) and (B) correct
3 In a metal, the valence electrons are:
A.

Attach to individual atoms

B.

Not attached to individual atoms

C.

Free to move within the metal

D.

Both (A) and (C)
4 Electric field lines emerge from the charge in:
A.

One dimension

B.

Two dimensions

C.

Three dimensions

D.

Four dimensions
5 In a metal, the valence electrons are:
A. Attached to individual atoms
B. Not attached to individual atoms
C. Free to move within the metal
D. Both A and B
6 In gases, the charge carries are:
A.

Electrons

B.

Positive ions

C.

Negative ions

D.

Both (A) and (C)
7 The inkjet printer ejects a thin stream of:
A.

Water

B.

Oil

C.

Ink

D.

Any of above
8 The passage of current is accompanied by a magnetic field in the surrounding space:
A.

Always accompanied

B.

Sometimes accompanied

C.

Never accompanied

D. Any of above
9

The magnitude of chemical Effects depends upon:
A.

Nature of liquid

B.

Quantity of Electricity passed through the liquid

C.

Color of the liquid

D.

Both (A) and (C)
10

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple

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  • Hamza

    Hamza

    17 Aug 2019

    It has many error

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  • Salmankhan

    Salmankhan

    02 Feb 2018

    Sir g plz correct this mcq the device which convert electrical into machinical is called moter but here the answer is generator

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