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

An eV is unit of:

Question # 3

Thermistors are prepared under

Question # 4

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

Question # 5

The flux through a closed surface depends upon:

Question # 6

Most practical application of electricity involve

Question # 7

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

Question # 8

The electric flux through any surface depends upon:

Question # 9

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

Question # 10

In case of metallic conductors, the charge carriers are

Question # 11

Heating effect of current utilized in:

Question # 12

The value of relative permittivity of different dielectrics are:

Question # 13

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

Question # 14

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

Question # 15

Tick the correct statement:

Question # 16

Most practical applications of electricity involve

Question # 17

The third band of the colour code:

Question # 18

In case of two identical charges placed certain distance apart, the electric field lines are:

Question # 19

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

Question # 20

An important part of photocopier is:

Question # 21

A field free region is found:

Question # 22

The charge carriers in an electrolyte are

Question # 23

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

Question # 24

In gases, the charge carriers are:

Question # 25

An important part of inkjet printer is:

Question # 26

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

Question # 27

Xerography means:

Question # 28

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

Question # 29

A thermistor is a resistor which is:

Question # 30

Electric field lines emerge from the charge in:

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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 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
3 The inkjet printer ejects a thin stream of:
A.

Water

B.

Oil

C.

Ink

D.

Any of above
4 The positive charge moving in one direction is equivalent in all external affects to a:
A.

Negative charge is moving in the same direction

B.

Positive charge is moving in the opposite direction

C.

Negative charge moving in the opposite direction

D.

Positive charges moving in the same direction
5 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
6 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)
7 The electric flux through any surface depends upon:
A.

Intensity of electric field

B.

Area of the surface

C.

Angle between intensity and area

D.

All of these
8 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
9 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
10 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

Test Questions