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

Question # 1

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 # 2

An ideal voltmeter has:

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

Question # 3

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 # 4

In case of metallic conductors, the charge carriers are

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

Question # 5

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 # 6

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 # 7

Xerography means:

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

Question # 8

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 # 9

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

Decreases
A
Increases
B
Remains the constant
C
Either 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

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 # 12

In case of metallic conductors, the charge carriers are

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

Question # 13

The magnitude of chemical Effects depends upon:

Nature of liquid
A
Quantity of Electricity passed through the liquid
B
Color of the liquid
C
Both (A) and (C)
D
Both (A) and (B)
E

Question # 14

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

Cell
A
Voltmeter
B
Thermocouple
C
Potentiometer
D
None of these E

Question # 15

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 # 16

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 # 17

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 # 18

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 # 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

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 # 21

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 # 22

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 # 23

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 # 24

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 # 25

Aluminum is a:

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

Question # 26

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 # 27

Tick the correct statement:

Both the potential and potential difference is scalars
A
Potential is a scalar but potential difference is a vector
B
Both are vectors
C
Potential is vector but potential difference is scalar
D
None of these
E

Question # 28

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 # 29

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 # 30

The third band of the colour code:

Gives the number of zeroes A
Is decimal multiplier B
Gives the resistance tolerance C
Gives the third digit D
Both (A) and (B) E

Sr.#	Question	Answer
1	The interior of a hollow charged metal sphere is a region which:	A. Contain some magnitude of electric field B. Is full of electric field lines C. Is field-free region D. Either (A) or (B)
2	When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:	A. Decreases B. Increases C. Remains the constant D. Either of these
3	Which of the following substances has got positive temperature coefficient of resistance?	A. Carbon B. Germanium C. Silicon D. Aluminium
4	An important part of photocopier is:	A. Toner cartridge B. Deflection plates C. Charging electrode D. Print head
5	Which instrument is expensive and difficult to use?	A. Voltmeter B. Potentiometer C. CRO D. Both A and C
6	In gases, the charge carriers are:	A. Electrons B. Positive ions C. Negative ions D. Both A and C
7	Most practical applications of electricity involve	A. Charges at rest B. Charges in motion C. Electrons at rest D. Atoms in motion
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	In case of metallic conductors, the charge carriers are	A. Protons B. Electrons C. Antiprotons D. Positrons
10	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

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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

Magnetic effect of current is used:

An ideal voltmeter has:

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

In case of metallic conductors, the charge carriers are

An inkjet printer uses in its operation:

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

Xerography means:

An electric field is generated along the wire when:

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

Electrolysis is the study of conduction of electricity through:

The surface destiny of charge is defined is:

In case of metallic conductors, the charge carriers are

The magnitude of chemical Effects depends upon:

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

Most practical application of electricity involve

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

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

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

The electric flux through any surface depends upon:

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

The value of relative permittivity of different dielectrics are:

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

In a metal, the valence electrons are:

The fourth band is a:

Aluminum is a:

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

Tick the correct statement:

In gases, the charge carries are:

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

The third band of the colour code:

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