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

Xerography means:

Question # 3

Tick the correct statement:

Question # 4

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

Question # 5

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

Question # 6

A field free region is found:

Question # 7

In a metal, the valence electrons are:

Question # 8

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

Question # 9

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

Question # 10

The positive charge moving in one direction is equivalent in all external affects to a:

Question # 11

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

Question # 12

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

Question # 13

The flux through a closed surface depends upon:

Question # 14

Static electricity is produced by the transfer of:

Question # 15

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

Question # 16

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

Question # 17

In gases, the charge carries are:

Question # 18

In gases, the charge carriers are:

Question # 19

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

Question # 20

The inkjet printer ejects a thin stream of:

Question # 21

In a metal, the valence electrons are:

Question # 22

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

Question # 23

Which instrument is expensive and difficult to use?

Question # 24

The emf is measured in:

Question # 25

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

Question # 26

Heating effect of current utilized in:

Question # 27

An eV is unit of:

Question # 28

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

Question # 29

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

Question # 30

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

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Sr.# Question Answer
1 When a constant potential difference is applied across the conductor, the drift velocity of electrons:
A.

Increases

B.

Decreases

C.

Remains the constant

D.

Either of these
2

An inkjet printer uses in its operation:
A.

Neutrons only

B.

Mesons only

C.

Positrons and photons

D.

An electric charge
3 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
4 Which of the following substances has got positive temperature coefficient of resistance?
A. Carbon
B. Germanium
C. Silicon
D. Aluminium
5 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
6

The magnitude of chemical Effects depends upon:
A.

Nature of liquid

B.

Quantity of Electricity passed through the liquid

C.

Color of the liquid

D.

Both (A) and (C)
7

The obvious effect/s of current is/are:
A.

Heating effect

B.

Magnetic effect

C.

Chemical effect

D.

Both (C) and (B)
8 The passage of current is accompanied by a magnetic field in the surrounding space:
A.

Always accompanied

B.

Sometimes accompanied

C.

Never accompanied

D. Any of above
9 The current that flows through the coil of a motor causes
A. Its shaft to revolve
B. Its brushes to rotate
C. Motor to move
D. Its shaft to rotate
10 A rheostat can e used:
A. As variable resistor
B. As potential divider
C. For varying the current
D. All of these

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