ECAT Pre General Science Physics Chapter 13 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 13 Current Electricity

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 13 Current Electricity

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ECAT Pre General Science Physics Chapter 13 Current Electricity

00:00
Question # 1

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

Question # 2

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

Question # 3

Tick the correct statement:

Question # 4

The obvious effect/s of current is/are:

Question # 5

Magnetic effect of current is used:

Question # 6

An important part of inkjet printer is:

Question # 7

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

Question # 8

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

Question # 9

Electrolysis is the study of conduction of electricity through:

Question # 10

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

Question # 11

The magnitude of chemical Effects depends upon:

Question # 12

In a metal, the valence electrons are:

Question # 13

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

Question # 14

Most practical applications of electricity involve

Question # 15

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

Question # 16

Xerography means:

Question # 17

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

Question # 18

Which instrument is expensive and difficult to use?

Question # 19

In case of metallic conductors, the charge carriers are

Question # 20

A thermistor is a resistor which is:

Question # 21

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

Question # 22

Aluminum is a:

Question # 23

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

Question # 24

The charge carries in the electrolyte are:

Question # 25

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

Question # 26

The flux through a closed surface depends upon:

Question # 27

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

Question # 28

An important part of photocopier is:

Question # 29

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

Question # 30

An ideal voltmeter has:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 SI unit of current describes the flow of charge at the rate of
A. One ampere per second
B. One coulomb per second
C. One electron per second
D. 6.25 x 1018electrons per second
2

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

Cell

B.

Voltmeter

C.

Thermocouple

D.

Potentiometer
3 Aluminum is a:
A.

Good insulator

B.

Bad conductor

C.

Both (A) and (B)

D.

Excellent conductor
4

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:
A.

Circle

B.

Rectangle

C.

Sphere

D.

Box
5

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

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons
6

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

At rest

B.

At rest under the action of electric forces

C.

In motion under the action of electric forces

D.

In motion
7 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
8 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
9

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple
10 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)

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