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

An important part of photocopier is:

Question # 2

The surface destiny of charge is defined is:

Question # 3

The charge carries in the electrolyte are:

Question # 4

In case of metallic conductors, the charge carriers are

Question # 5

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

Question # 6

As the current flow through the wire:

Question # 7

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

Question # 8

Selenium is:

Question # 9

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

Question # 10

A rheostat can e used:

Question # 11

An example of photoconductor is:

Question # 12

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

Question # 13

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

Question # 14

As the current flows through the wire

Question # 15

Which instrument is expensive and difficult to use?

Question # 16

Gaussian surface is always:

Question # 17

In case of metallic conductors, the charge carriers are

Question # 18

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

Question # 19

An electric field is generated along the wire when:

Question # 20

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

Question # 21

The charge carriers in an electrolyte are

Question # 22

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

Question # 23

A thermistor is a resistor which is:

Question # 24

Xerography means:

Question # 25

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

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

The current that flows through the coil of a motor causes

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

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

Both the conductors are at the same potential

B.

Potential difference across the conductors remain constant

C.

Potential difference across the conductors becomes zero

D.

Both (A) and (B)
2 In case of metallic conductors, the charge carriers 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

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
5

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

Greater than the speed at which they pass from left to right

B.

Less than the speed at which they pass from left to right

C.

The same speed at which they pass from left to right

D.

Any of above
6

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

Different

B.

Same

C.

Such that it is greater in the first case

D.

Such that it is greater in the second case
7 Electrolysis is the study of conduction of electricity through:
A. Solids
B. Liquids
C. Gases
D. Plasma
8 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
9 When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:
A.

Decreases

B.

Increases

C.

Remains the constant

D.

Either of these
10

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 shafts to rotate

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