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

Question # 1

In case of metallic conductors, the change carries are:

Protons
A
Electrons
B
Antiprotons
C
Positrons
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

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 # 4

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 # 5

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 # 6

The charge carriers in an electrolyte are

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

Question # 7

The effects of bends in a wire on its electrical resistance are:

Zero
A
Much larger
B
Larger
C
Smaller
D
None of these
E

Question # 8

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

Force A
Energy B
Potential C
Current D
Charge E

Question # 9

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 # 10

An inkjet printer uses in its operation:

Neutrons only
A
Mesons only
B
Positrons and photons
C
An electric charge
D
None of these
E

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

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 # 13

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 # 14

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 # 15

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 # 16

Gaussian surface is always:

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

Question # 17

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 # 18

Xerography means:

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

Question # 19

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 # 20

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 # 21

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 # 22

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 # 23

Aluminum is a:

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

Question # 24

As the current flow through the wire:

It generates heat in the wire
A
It produces sound in the wire
B
Resistance of the wire decreases
C
Voltage across the ends is increased
D
None of these E

Question # 25

Heating effect of current utilized in:

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

Question # 26

Electric field lines emerge from the charge in:

One dimension
A
Two dimensions
B
Three dimensions
C
Four dimensions
D
None of them
E

Question # 27

The emf is measured in:

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

Question # 28

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 # 29

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 # 30

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

Different
A
Same
B
Such that it is greater in the first case
C
Such that it is greater in the second case
D
None of these
E

Sr.#	Question	Answer
1	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
2	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
3	The best conductor is:	A. Silver B. Copper C. Aluminimum D. Both B and C
4	The value of relative permittivity of different dielectrics are:	A. Equal B. Different C. Greater than one D. Smaller than one
5	A thermistor is a resistor which is:	A. Light Sensitive B. Heat Sensitive C. Sound Sensitive D. All of these
6	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)
7	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
8	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
9	Magnetic effect of current is used:	A. In electric motor B. To detect current C. To measure current D. All 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 shaft to rotate

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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 case of metallic conductors, the change carries are:

An eV is unit of:

Magnetic effect of current is used:

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

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

The charge carriers in an electrolyte are

The effects of bends in a wire on its electrical resistance are:

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

Thermistors are prepared under

An inkjet printer uses in its operation:

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

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

Electric flux is:

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

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

Gaussian surface is always:

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

Xerography means:

The electric flux through any surface depends upon:

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

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

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

Aluminum is a:

As the current flow through the wire:

Heating effect of current utilized in:

Electric field lines emerge from the charge in:

The emf is measured in:

In gases, the charge carriers are:

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:

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

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