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

Question # 1

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 # 2

The current that flows through the coil of a motor causes

Its shaft to revolve A
Its brushes to rotate B
Motor to move C
Its shaft to rotate D
None of these E

Question # 3

Electric flux is:

Cross product of two vector
A
Dot product of two vectors
B
A vector quantity
C
A scalar quantity
D
Both (B) and (D)
E

Question # 4

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

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

Question # 5

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

Its shaft to revolve
A
Its brushes to rotate
B
Motor to move
C
Its shafts to rotate
D
None of these
E

Question # 6

In case of metallic conductors, the change carries are:

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

Question # 7

In case of metallic conductors, the charge carriers are

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

Question # 8

An ideal voltmeter has:

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

Question # 9

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 # 10

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 # 11

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 # 12

An eV is unit of:

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

Question # 13

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 # 14

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 # 15

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 # 16

The value of resistivity is the least for:

Copper A
Aluminimum B
Silver C
Tungsten D
Iron E

Question # 17

Xerography means:

Dry writing
A
Wet writing
B
Poor writing
C
Excellent writing
D
Both (A) and (B)
E

Question # 18

Gaussian surface is always:

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

Question # 19

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 # 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

Electrolysis is the study of conduction of electricity through:

Solids A
Liquids B
Gases C
Plasma D

Question # 22

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 # 23

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

Question # 24

The inkjet printer ejects a thin stream of:

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

Question # 25

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 # 26

Heating effect of current utilized in:

Electric motor
A
Electric toaster
B
Electroplating
C
Electric kettle
D
Both (B) and (D)
E

Question # 27

Kirchhoff's first rule is also called:

Loop rule A
Thumb rule B
Point rule C
Right hand rule D
None of these 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 electric flux through any surface depends upon:

Intensity of electric field
A
Area of the surface
B
Angle between intensity and area
C
All of these
D
None of these
E

Question # 30

Static electricity is produced by the transfer of:

Electrons
A
Protons
B
One fluid
C
Two fluids
D
None of these
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	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
3	In gases, the charge carriers are:	A. Electrons B. Positive ions C. Negative ions D. Both A and C
4	An important part of photocopier is:	A. Toner cartridge B. Deflection plates C. Charging electrode D. Print head
5	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
6	The free electrons in metals:	A. Are in random motion and their speed depends upon temperature B. Move in particular direction C. Move with speed of light D. Move such that their speed does not depend on their temperature
7	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:	A. Same B. Different C. Opposite to each other D. At 60º with each other
8	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
9	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)
10	Another mean of electric potential energy per unit charge is given by:	A. Electric intensity B. Potential gradient C. Electric Flux D. Potential difference

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