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

Question # 1

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 # 2

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 # 3

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 # 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

Selenium is:

An insulator
A
A conductor
B
Insulator in the dark and becomes conductor when exposed to light
C
Conductor in the dark only
D
None of these
E

Question # 6

Aluminum is a:

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

Question # 7

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 # 8

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 # 9

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 # 10

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 # 11

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 # 12

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 # 13

Static electricity is produced by the transfer of:

Electrons
A
Protons
B
One fluid
C
Two fluids
D
None of these
E

Question # 14

The passage of current is accompanied by a magnetic field in the surrounding space:

Always accompanied
A
Sometimes accompanied
B
Never accompanied
C
Any of above
D
None of these
E

Question # 15

Electrolysis is the study of conduction of electricity through:

Solids A
Liquids B
Gases C
Plasma D

Question # 16

In case of metallic conductors, the charge carriers are

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

Question # 17

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 # 18

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 # 19

The term drift velocity is used when the ends of a wire are:

Connected to a laser source
A
Connected to a voltage source
B
Not connected to a voltage source
C
At different values of potential
D
Both (B) and (D)
E

Question # 20

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 # 21

The best conductor is:

Silver A
Copper B
Aluminimum C
Both B and C D
None of them E

Question # 22

The emf is measured in:

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

Question # 23

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 # 24

An eV is unit of:

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

Question # 25

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 # 26

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 # 27

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 # 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

In order to have a constant current through wire, the potential difference across its end should:

Be zero
A
Be maintained constant
B
Goes on increasing
C
Go on decreasing
D
Both (A) and (B)
E

Question # 30

The example/s of non-electrical energy to electrical is/are:

Chemical energy
A
Mechanical energy
B
Heat energy
C
Both (A) and (B)
D
All of these
E

Sr.#	Question	Answer
1	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
2	Static electricity is produced by the transfer of:	A. Electrons B. Protons C. One fluid D. Two fluids
3	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
4	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
5	The charge carriers in an electrolyte are	A. Positive ions B. Negative ions C. Either A or B D. Both A and B
6	Heating effect of current utilized in:	A. Electric motor B. Electric toaster C. Electroplating D. Electric kettle
7	An important part of photocopier is:	A. Toner cartridge B. Deflection plates C. Charging electrode D. Print head
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 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
10	Thermistors are prepared under	A. High pressure and low temperature B. High pressure and high temperature C. Low pressure and low temperature D. Low pressure and high temprature
11	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
12	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
13	The surface destiny of charge is defined is:	A. Charge per volume B. Mass per volume C. Charge per area D. Mass per area
14	Most practical applications of electricity involve	A. Charges at rest B. Charges in motion C. Electrons at rest D. Atoms in motion
15	If the ends of a wire are connected to a battery an electric field E will be set up at:	A. The ends of the wire only B. Mid points of the wire only C. Every point within the wire D. At nodes only
16	Kirchhoff's first rule is also called:	A. Loop rule B. Thumb rule C. Point rule D. Right hand rule
17	Two dissimilar metals joined at their ends kept at constant temperature constitute:	A. Cell B. Voltmeter C. Thermocouple D. Potentiometer
18	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)
19	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
20	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
21	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)
22	Which of the following substances has got positive temperature coefficient of resistance?	A. Carbon B. Germanium C. Silicon D. Aluminium
23	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
24	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
25	In case of metallic conductors, the charge carriers are	A. Protons B. Electrons C. Antiprotons D. Positrons
26	In gases, the charge carriers are:	A. Electrons B. Positive ions C. Negative ions D. Both A and C
27	Aluminum is a:	A. Good insulator B. Bad conductor C. Both (A) and (B) D. Excellent conductor
28	An example of photoconductor is:	A. Boron B. Carbon C. Iron D. Aluminum
29	The fourth band is a:	A. Silver band B. Red band C. Gold band D. Either A or C
30	SI unit of current describes the flow of charge at the rate of	A. One ampere per second B. One coulomb per second C. One electron per second D. 6.25 x 10¹⁸electrons per second

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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

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

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

Kirchhoff's first rule is also called:

In a metal, the valence electrons are:

Selenium is:

Aluminum is a:

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

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

In gases, the charge carries are:

The obvious effect/s of current is/are:

An electric field is generated along the wire when:

The magnitude of chemical Effects depends upon:

Static electricity is produced by the transfer of:

The passage of current is accompanied by a magnetic field in the surrounding space:

Electrolysis is the study of conduction of electricity through:

In case of metallic conductors, the charge carriers are

The value of relative permittivity of different dielectrics 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:

The term drift velocity is used when the ends of a wire are:

The flux through a closed surface depends upon:

The best conductor is:

The emf is measured in:

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

An eV is unit of:

In a metal, the valence electrons are:

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

As the current flow through the wire:

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

In order to have a constant current through wire, the potential difference across its end should:

The example/s of non-electrical energy to electrical is/are:

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