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

Question # 1

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 # 2

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 # 3

As the current flows through the wire

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

Question # 4

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

Force A
Energy B
Potential C
Current D
Charge E

Question # 5

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

Question # 6

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 # 7

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 # 8

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 # 9

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

Circle
A
Rectangle
B
Sphere
C
Box
D
Cylinder
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

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

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 # 13

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 # 14

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

Decreasing from zero to maximum
A
Increasing from zero to maximum
B
Decreasing from maximum to zero
C
Increasing from maximum to zero
D
Both (A) and (D)
E

Question # 15

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

Question # 16

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 # 17

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 # 18

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 # 19

Field lines are closer to each other in the region where the field is:

Stronger
A
Weaker
B
Much weaker
C
Absent
D
None of these
E

Question # 20

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 # 21

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 # 22

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 # 23

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 # 24

In case of metallic conductors, the charge carriers are

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

Question # 25

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 # 26

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 # 27

The flux through a closed surface depends upon:

Shape of geometry of the closed surface
A
Charge enclosed
B
Nature of the medium
C
Both (A) and (B)
D
Both (B) and (C)
E

Question # 28

An eV is unit of:

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

Question # 29

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 # 30

Another mean of electric potential energy per unit charge is given by:

Electric intensity
A
Potential gradient
B
Electric Flux
C
Potential difference
D
None of these
E

Sr.#	Question	Answer
1	A rheostat can e used:	A. As variable resistor B. As potential divider C. For varying the current D. All of these
2	The number of field lines passing through unit area held perpendicular to the field lines represent:	A. Flux in that region B. Intensity of the field C. Charge D. Area of the region
3	Which of the following substances has got positive temperature coefficient of resistance?	A. Carbon B. Germanium C. Silicon D. Aluminium
4	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
5	Electrolysis is the study of conduction of electricity through:	A. Solids B. Liquids C. Gases D. Plasma
6	When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:	A. Decreasing from zero to maximum B. Increasing from zero to maximum C. Decreasing from maximum to zero D. Increasing from maximum to zero
7	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)
8	In case of metallic conductors, the charge carriers are	A. Protons B. Electrons C. Antiprotons D. Positrons
9	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
10	In gases, the charge carries are:	A. Electrons B. Positive ions C. Negative ions D. Both (A) and (C)

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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

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

Magnetic effect of current is used:

As the current flows through the wire

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

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

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

The charge carriers in an electrolyte are

A thermistor is a resistor which is:

While finding the electric intensity at a point between two oppositely charged parallel plates, the Gaussian surface is taken in the form of a hollow:

The inkjet printer ejects a thin stream of:

In a metal, the valence electrons are:

Most practical application of electricity involve

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

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

The third band of the colour code:

The fourth band is a:

Thermistors are prepared under

As the current flow through the wire:

Field lines are closer to each other in the region where the field is:

The current that flows through the coil of a motor causes

Electric field lines emerge from the charge in:

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

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

In case of metallic conductors, the charge carriers are

The obvious effect/s of current is/are:

In a metal, the valence electrons are:

The flux through a closed surface depends upon:

An eV is unit of:

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

Another mean of electric potential energy per unit charge is given by:

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