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

A field free region is found:

Question # 2

An example of photoconductor is:

Question # 3

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

Question # 4

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

Question # 5

As the current flows through the wire

Question # 6

Selenium is:

Question # 7

In gases, the charge carriers are:

Question # 8

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

Question # 9

Electrolysis is the study of conduction of electricity through:

Question # 10

Kirchhoff's first rule is also called:

Question # 11

Aluminum is a:

Question # 12

The electric flux through any surface depends upon:

Question # 13

The surface destiny of charge is defined is:

Question # 14

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

Question # 15

In a metal, the valence electrons are:

Question # 16

The current that flows through the coil of a motor causes

Question # 17

Electric flux is:

Question # 18

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

Question # 19

Thermistors are prepared under

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

A thermistor is a resistor which is:

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

The value of resistivity is the least for:

Question # 28

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

Question # 29

An important part of inkjet printer is:

Question # 30

The value of relative permittivity of different dielectrics are:

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Sr.# Question Answer
1 As the current flow through the wire:
A.

It generates heat in the wire

B.

It produces sound in the wire

C.

Resistance of the wire decreases

D.

Voltage across the ends is increased
2

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple
3

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
4

Heating effect of current utilized in:
A.

Electric motor

B.

Electric toaster

C.

Electroplating

D.

Electric kettle
5

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

Chemical energy

B.

Mechanical energy

C.

Heat energy

D.

Both (A) and (B)
6

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
7 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
8 The value of relative permittivity of different dielectrics are:
A.

Equal

B.

Different

C.

Greater than one

D.

Smaller than one
9 Gaussian surface is always:
A.

Rectangular

B.

Spherical

C.

Cylindrical

D.

Box shape
10 The flux through a closed surface depends upon:
A.

Shape of geometry of the closed surface

B.

Charge enclosed

C.

Nature of the medium

D.

Both (A) and (B)

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