ECAT Pre General Science Chapter 13 online mcq test with answers for Physics chapter 13 (Current Electricity)

Question # 1

Aluminum is a:

Good insulator
A
Bad conductor
B
Both (A) and (B)
C
Excellent conductor
D
Semiconductor
E

Question # 2

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

Carbon A
Germanium B
Silicon C
Aluminium D
None of these E

Question # 3

The strength of magnetic field at certain points around a wire depends upon:

Value of current passing
A
Distance from the current element
B
Color of the material
C
Both (A) and (B)
D
Both (B) and (C)
E

Question # 4

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

One ampere per second A
One coulomb per second B
One electron per second C
6.25 x 10¹⁸electrons per second D
Both B and D E

Question # 5

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

Equal
A
Zero
B
First is greater than the second
C
Second is greater than the first
D
Both (A) and (B)
E

Question # 6

An example of photoconductor is:

Boron
A
Carbon
B
Iron
C
Aluminum
D
Selenium
E

Question # 7

The obvious effect/s of current is/are:

Heating effect
A
Magnetic effect
B
Chemical effect
C
Both (C) and (B)
D
All of these
E

Question # 8

An eV is unit of:

Potential
A
Energy
B
Work
C
Power
D
Both (B) and(C)
E

Question # 9

An important part of photocopier is:

Toner cartridge
A
Deflection plates
B
Charging electrode
C
Print head
D
None of these
E

Question # 10

The inkjet printer ejects a thin stream of:

Water
A
Oil
B
Ink
C
Any of above
D
None of these
E

Question # 11

An electric field is generated along the wire when:

Its resistance is very high
A
A constant potential is maintained across the wire
B
Net current through the wire is zero
C
A constant potential difference is maintained across the wire
D
Either (A) or (D)
E

Question # 12

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

At rest
A
At rest under the action of electric forces
B
In motion under the action of electric forces
C
In motion
D
At rest under the action of nuclear forces
E

Question # 13

In case of metallic conductors, the charge carriers are

Protons A
Electrons B
Antiprotons C
Positrons D
Both A and B E

Question # 14

Gaussian surface is always:

Rectangular
A
Spherical
B
Cylindrical
C
Box shape
D
Any of these
E

Question # 15

The fourth band is a:

Silver band A
Red band B
Gold band C
Either A or C D
Either A or B E

Question # 16

A thermistor is a resistor which is:

Light Sensitive A
Heat Sensitive B
Sound Sensitive C
All of these D
None of these E

Question # 17

A rheostat can e used:

As variable resistor A
As potential divider B
For varying the current C
All of these D
None of these E

Question # 18

The surface destiny of charge is defined is:

Charge per volume
A
Mass per volume
B
Charge per area
C
Mass per area
D
Both (B) and (C)
E

Question # 19

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

Increases
A
Decreases
B
Remains the constant
C
Either of these
D
None of these
E

Question # 20

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

Negative charge is moving in the same direction
A
Positive charge is moving in the opposite direction
B
Negative charge moving in the opposite direction
C
Positive charges moving in the same direction
D
None of these
E

Question # 21

The emf is measured in:

Newton A
Volt B
J/C C
Both A and B D
Both B and C E

Question # 22

In gases, the charge carries are:

Electrons
A
Positive ions
B
Negative ions
C
Both (A) and (C)
D
Both (A) and (B)
E

Question # 23

The term drift velocity is used when the ends of a wire are:

Connected to a laser source
A
Connected to a voltage source
B
Not connected to a voltage source
C
At different values of potential
D
Both (B) and (D)
E

Question # 24

In a metal, the valence electrons are:

Attach to individual atoms
A
Not attached to individual atoms
B
Free to move within the metal
C
Both (A) and (C)
D
Both (B) and (C)
E

Question # 25

Electrolysis is the study of conduction of electricity through:

Solids A
Liquids B
Gases C
Plasma D

Question # 26

An important part of inkjet printer is:

Toner A
Drum
B
Deflection plates
C
Heated roles
D
None of these
E

Question # 27

In a metal, the valence electrons are:

Attached to individual atoms A
Not attached to individual atoms B
Free to move within the metal C
Both A and B D
Both A and C E

Question # 28

Thermistors are prepared under

High pressure and low temperature A
High pressure and high temperature B
Low pressure and low temperature C
Low pressure and high temprature D
None of these E

Question # 29

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

Primary cell
A
Secondary cell
B
Both (A) and (B)
C
Photovoltaic cell
D
Solar cell
E

Question # 30

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

Both the conductors are at the same potential
A
Potential difference across the conductors remain constant
B
Potential difference across the conductors becomes zero
C
Both (A) and (B)
D
Both (A) and (C)
E

Sr.#	Question	Answer
1	The current of 1 ampere is passing through a conductor. The charge passing through it in half a minute is:	A. One coulomb B. 0.5 coulomb C. 30 coulomb D. 2 coulombs
2	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
3	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
4	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
5	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
6	In case of metallic conductors, the charge carriers are	A. Protons B. Electrons C. Antiprotons D. Positrons
7	The value of relative permittivity of different dielectrics are:	A. Equal B. Different C. Greater than one D. Smaller than one
8	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)
9	A rheostat can e used:	A. As variable resistor B. As potential divider C. For varying the current D. All of these
10	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

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ECAT Pre General Science Physics Chapter 13 MCQ Test With Answer

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

ECAT Pre General Science Physics Chapter 13 Current Electricity

Aluminum is a:

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

The strength of magnetic field at certain points around a wire depends upon:

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

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

An example of photoconductor is:

The obvious effect/s of current is/are:

An eV is unit of:

An important part of photocopier is:

The inkjet printer ejects a thin stream of:

An electric field is generated along the wire when:

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

In case of metallic conductors, the charge carriers are

Gaussian surface is always:

The fourth band is a:

A thermistor is a resistor which is:

A rheostat can e used:

The surface destiny of charge is defined is:

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

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

The emf is measured in:

In gases, the charge carries are:

The term drift velocity is used when the ends of a wire are:

In a metal, the valence electrons are:

Electrolysis is the study of conduction of electricity through:

An important part of inkjet printer is:

In a metal, the valence electrons are:

Thermistors are prepared under

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

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

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