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

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Question # 1

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

Question # 2

The interior of a hollow charged metal sphere is a region which:

Question # 3

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

Question # 4

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

Question # 5

Magnetic effect of current is used:

Question # 6

The obvious effect/s of current is/are:

Question # 7

An important part of inkjet printer is:

Question # 8

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

Question # 9

The charge carriers in an electrolyte are

Question # 10

Electrolysis is the study of conduction of electricity through:

Question # 11

An eV is unit of:

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

In case of metallic conductors, the charge carriers are

Question # 16

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

Question # 17

An inkjet printer uses in its operation:

Question # 18

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

Question # 19

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

Question # 20

An important part of photocopier is:

Question # 21

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 # 22

If the ends of a wire are connected to a battery an electric field E will be set up at:

Question # 23

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

Question # 24

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

Question # 25

A field free region is found:

Question # 26

The quantity having the same unit as that of emf is:

Question # 27

An example of photoconductor is:

Question # 28

In case of metallic conductors, the charge carriers are

Question # 29

As the current flow through the wire:

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 The best conductor is:
A. Silver
B. Copper
C. Aluminimum
D. Both B and C
2 The strength of magnetic field at certain points around a wire depends upon:
A.

Value of current passing

B.

Distance from the current element

C.

Color of the material

D.

Both (A) and (B)
3

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)
4 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)
5

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple
6

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
7 The fourth band is a:
A. Silver band
B. Red band
C. Gold band
D. Either A or C
8 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
9

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

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons
10 An important part of photocopier is:
A.

Toner cartridge

B. Deflection plates

C.

Charging electrode

D.

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