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

Question # 1

In gases, the charge carriers are:

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

Question # 2

An eV is unit of:

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

Question # 3

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

Force A
Energy B
Potential C
Current D
Charge E

Question # 4

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 # 5

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 # 6

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:

Same
A
Different
B
Opposite to each other
C
At 60º with each other
D
Both (B) and (C)
E

Question # 7

Magnetic effect of current is used:

In electric motor
A
To detect current
B
To measure current
C
All of these
D
None of these
E

Question # 8

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

Contain some magnitude of electric field
A
Is full of electric field lines
B
Is field-free region
C
Either (A) or (B)
D
None of these
E

Question # 9

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 # 10

Electrolysis is the study of conduction of electricity through:

Solids A
Liquids B
Gases C
Plasma D

Question # 11

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

Straight lines
A
Sine curves
B
Curved
C
Both (A) and (B)
D
None of these
E

Question # 12

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

One coulomb A
0.5 coulomb B
30 coulombs C
2 coulombs D
None of these E

Question # 13

A field free region is found:

Near the outer surface of a hollow charged metal sphere
A
In the interior of solid metal uncharged sphere
B
In the interior of solid metal charged sphere
C
Both (A) and (B)
D
Both (A) and (C)
E

Question # 14

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

Greater than the speed at which they pass from left to right
A
Less than the speed at which they pass from left to right
B
The same speed at which they pass from left to right
C
Any of above
D
None of them
E

Question # 15

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 # 16

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 # 17

In case of metallic conductors, the charge carriers are

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

Question # 18

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

Positrons A
Positive charges B
Negative charges C
Both A and C D
None of these E

Question # 19

The charge carries in the electrolyte are:

Positive ions
A
Negative ions
B
Either (A) or (B)
C
Both (A) and (B)
D
Neither (A) nor (B)
E

Question # 20

An ideal voltmeter has:

Zero resistance A
Small resistance B
Large resistance C
Infinite resistance D
Both A and B E

Question # 21

Most practical application of electricity involve

Charges at the rest
A
Charges in the motion
B
Electrons at rest
C
Atoms in motion
D
Molecules in motion
E

Question # 22

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

Flux in that region
A
Intensity of the field
B
Charge
C
Area of the region
D
None of these
E

Question # 23

The inkjet printer ejects a thin stream of:

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

Question # 24

The value of relative permittivity of different dielectrics are:

Equal
A
Different
B
Greater than one
C
Smaller than one
D
Both (B) and (C)
E

Question # 25

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 # 26

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

The ends of the wire only
A
Mid points of the wire only
B
Every point within the wire
C
At nodes only
D
Both (B) and (D)
E

Question # 27

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 # 28

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

No lines cross this area
A
Maximum lines pass through this area
B
The number of lines are between zero and maximum
C
Both (A) and (B) correct
D
None of these
E

Question # 29

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 # 30

In case of metallic conductors, the charge carriers are

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

Sr.#	Question	Answer
1	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)
2	The conventional current is the name given to current due to flow of:	A. Positrons B. Positive charges C. Negative charges D. Both (A) and (C)
3	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
4	An important part of photocopier is:	A. Toner cartridge B. Deflection plates C. Charging electrode D. Print head
5	Magnetic effect of current is used:	A. In electric motor B. To detect current C. To measure current D. All of these
6	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
7	Which instrument is expensive and difficult to use?	A. Voltmeter B. Potentiometer C. CRO D. Both A and C
8	An inkjet printer uses in its operation:	A. Neutrons only B. Mesons only C. Positrons and photons D. An electric charge
9	In case of two identical charges placed certain distance apart, the electric field lines are:	A. Straight lines B. Sine curves C. Curved D. Both (A) and (B)
10	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
11	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)
12	The fourth band is a:	A. Silver band B. Red band C. Gold band D. Either A or C
13	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
14	The value of resistivity is the least for:	A. Copper B. Aluminimum C. Silver D. Tungsten
15	In a metal, the valence electrons are:	A. Attached to individual atoms B. Not attached to individual atoms C. Free to move within the metal D. Both A and B
16	The surface destiny of charge is defined is:	A. Charge per volume B. Mass per volume C. Charge per area D. Mass per area
17	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)
18	Conversion of chemical energy to electrical energy can be achieved by:	A. Primary cell B. Secondary cell C. Both (A) and (B) D. Photovoltaic cell
19	In case of metallic conductors, the charge carriers are	A. Protons B. Electrons C. Antiprotons D. Positrons
20	In case of metallic conductors, the change carries are:	A. Protons B. Electrons C. Antiprotons D. Positrons
21	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
22	The electric flux through any surface depends upon:	A. Intensity of electric field B. Area of the surface C. Angle between intensity and area D. All of these
23	An eV is unit of:	A. Potential B. Energy C. Work D. Power
24	The charge carriers in an electrolyte are	A. Positive ions B. Negative ions C. Either A or B D. Both A and B
25	Tick the correct statement:	A. Both the potential and potential difference is scalars B. Potential is a scalar but potential difference is a vector C. Both are vectors D. Potential is vector but potential difference is scalar
26	Kirchhoff's first rule is also called:	A. Loop rule B. Thumb rule C. Point rule D. Right hand rule
27	In case of metallic conductors, the charge carriers are	A. Protons B. Electrons C. Antiprotons D. Positrons
28	An electric field is generated along the wire when:	A. Its resistance is very high B. A constant potential is maintained across the wire C. Net current through the wire is zero D. A constant potential difference is maintained across the wire
29	When certain area A is held parallel to the field lines, then:	A. No lines cross this area B. Maximum lines pass through this area C. The number of lines are between zero and maximum D. Both (A) and (B) correct
30	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

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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

In gases, the charge carriers are:

An eV is unit of:

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

In a metal, the valence electrons are:

Thermistors are prepared under

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:

Magnetic effect of current is used:

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

A rheostat can e used:

Electrolysis is the study of conduction of electricity through:

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

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

A field free region is found:

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

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

In gases, the charge carries are:

In case of metallic conductors, the charge carriers are

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

The charge carries in the electrolyte are:

An ideal voltmeter has:

Most practical application of electricity involve

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

The inkjet printer ejects a thin stream of:

The value of relative permittivity of different dielectrics are:

A thermistor is a resistor which is:

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

An electric field is generated along the wire when:

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

The fourth band is a:

In case of metallic conductors, the charge carriers are

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