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

A rheostat can e used:

Question # 2

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

Question # 3

The best conductor is:

Question # 4

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

Question # 5

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

Question # 6

The inkjet printer ejects a thin stream of:

Question # 7

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

Question # 8

An important part of photocopier is:

Question # 9

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

Question # 10

Most practical applications of electricity involve

Question # 11

The flux through a closed surface depends upon:

Question # 12

Magnetic effect of current is used:

Question # 13

Kirchhoff's first rule is also called:

Question # 14

As the current flow through the wire:

Question # 15

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 # 16

The free electrons in metals:

Question # 17

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

Question # 18

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

Question # 19

Electrolysis is the study of conduction of electricity through:

Question # 20

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

Question # 21

The charge carries in the electrolyte are:

Question # 22

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

Question # 23

In a metal, the valence electrons are:

Question # 24

An eV is unit of:

Question # 25

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

Question # 26

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

Question # 27

In gases, the charge carriers are:

Question # 28

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

Question # 29

In case of metallic conductors, the charge carriers are

Question # 30

The effects of bends in a wire on its electrical resistance are:

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Sr.# Question Answer
1 A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s
A. One coulomb
B. 0.5 coulomb
C. 30 coulombs
D. 2 coulombs
2 As the current flows through the wire
A. It generates heat in the wire
B. It produces sound in the wire
C. Resistance of the wire decrease
D. Voltage across the ends is the increase
3 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)
4 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
5

An inkjet printer uses in its operation:
A.

Neutrons only

B.

Mesons only

C.

Positrons and photons

D.

An electric charge
6 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
7 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
8 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
9 Most practical applications of electricity involve
A. Charges at rest
B. Charges in motion
C. Electrons at rest
D. Atoms in motion
10

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

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons

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