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

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

Question # 2

In gases, the charge carriers are:

Question # 3

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 # 4

The fourth band is a:

Question # 5

The third band of the colour code:

Question # 6

An eV is unit of:

Question # 7

Another mean of electric potential energy per unit charge is given by:

Question # 8

In a metal, the valence electrons are:

Question # 9

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

Question # 10

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

Question # 11

In gases, the charge carries are:

Question # 12

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

Question # 13

As the current flows through the wire

Question # 14

The value of relative permittivity of different dielectrics are:

Question # 15

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

Question # 16

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

Question # 17

The charge carriers in an electrolyte are

Question # 18

The free electrons in metals:

Question # 19

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

Question # 20

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

Question # 21

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

Question # 22

In case of metallic conductors, the change carries are:

Question # 23

Thermistors are prepared under

Question # 24

A rheostat can e used:

Question # 25

Which instrument is expensive and difficult to use?

Question # 26

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

Question # 27

Most practical application of electricity involve

Question # 28

An ideal voltmeter has:

Question # 29

Electric field lines emerge from the charge in:

Question # 30

The emf is measured in:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 The term drift velocity is used when the ends of a wire are:
A.

Connected to a laser source

B.

Connected to a voltage source

C.

Not connected to a voltage source

D.

At different values of potential
2

In case of metallic conductors, the change carries are:
A.

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons
3 Xerography means:
A.

Dry writing

B. Wet writing

C.

Poor writing

D.

Excellent writing
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 An example of photoconductor is:
A.

Boron

B.

Carbon

C.

Iron

D.

Aluminum
6 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)
7

The charge carries in the electrolyte are:
A.

Positive ions

B.

Negative ions

C.

Either (A) or (B)

D.

Both (A) and (B)
8 The earth’s potential and potential at infinity are taken:
A.

Equal

B.

Zero

C.

First is greater than the second

D.

Second is greater than the first
9

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
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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  • 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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