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

Question # 1

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 # 2

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

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

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 # 5

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 # 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

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 # 8

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 # 9

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 # 10

The device which can convert heat energy into electrical energy is called:

Thermistor
A
Thermometer
B
Thermostat
C
Thermocouple
D
Both (C) and (D)
E

Question # 11

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 # 12

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 # 13

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 # 14

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 # 15

In case of metallic conductors, the charge carriers are

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

Question # 16

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 # 17

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 # 18

In case of metallic conductors, the charge carriers are

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

Question # 19

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 # 20

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 # 21

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 # 22

A rheostat can e used:

As variable resistor A
As potential divider B
For varying the current C
All of these D
None of these E

Question # 23

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 # 24

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 # 25

An ideal voltmeter has:

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

Question # 26

Static electricity is produced by the transfer of:

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

Question # 27

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 # 28

Gaussian surface is always:

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

Question # 29

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 # 30

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

Sr.#	Question	Answer
1	An eV is unit of:	A. Potential B. Energy C. Work D. Power
2	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
3	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)
4	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
5	Another mean of electric potential energy per unit charge is given by:	A. Electric intensity B. Potential gradient C. Electric Flux D. Potential difference
6	The value of relative permittivity of different dielectrics are:	A. Equal B. Different C. Greater than one D. Smaller than one
7	Static electricity is produced by the transfer of:	A. Electrons B. Protons C. One fluid D. Two fluids
8	In gases, the charge carriers are:	A. Electrons B. Positive ions C. Negative ions D. Both A and C
9	The strength of magnetic field at certain points around a wire depends upon:	A. Value of current passing B. Distance from the current element C. Color of the material D. Both (A) and (B)
10	When a constant potential difference is applied across the conductor, the drift velocity of electrons:	A. Increases B. Decreases C. Remains the constant D. Either of these
11	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
12	An example of photoconductor is:	A. Boron B. Carbon C. Iron D. Aluminum
13	Selenium is:	A. An insulator B. A conductor C. Insulator in the dark and becomes conductor when exposed to light D. Conductor in the dark only
14	In case of metallic conductors, the change carries are:	A. Protons B. Electrons C. Antiprotons D. Positrons
15	The best conductor is:	A. Silver B. Copper C. Aluminimum D. Both B and C
16	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
17	Kirchhoff's first rule is also called:	A. Loop rule B. Thumb rule C. Point rule D. Right hand rule
18	Gaussian surface is always:	A. Rectangular B. Spherical C. Cylindrical D. Box shape
19	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
20	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
21	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:	A. Circle B. Rectangle C. Sphere D. Box
22	The passage of current is accompanied by a magnetic field in the surrounding space:	A. Always accompanied B. Sometimes accompanied C. Never accompanied D. Any of above
23	Most practical application of electricity involve	A. Charges at the rest B. Charges in the motion C. Electrons at rest D. Atoms in motion
24	A thermistor is a resistor which is:	A. Light Sensitive B. Heat Sensitive C. Sound Sensitive D. All of these
25	The charge carries in the electrolyte are:	A. Positive ions B. Negative ions C. Either (A) or (B) D. Both (A) and (B)
26	The charge carriers in an electrolyte are	A. Positive ions B. Negative ions C. Either A or B D. Both A and B
27	Two dissimilar metals joined at their ends kept at constant temperature constitute:	A. Cell B. Voltmeter C. Thermocouple D. Potentiometer
28	In gases, the charge carries are:	A. Electrons B. Positive ions C. Negative ions D. Both (A) and (C)
29	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
30	The effects of bends in a wire on its electrical resistance are:	A. Zero B. Much larger C. Larger D. Smaller

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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

The positive charge moving in one direction is equivalent in all external affects to a:

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

Magnetic effect of current is used:

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

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

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

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

The magnitude of chemical Effects depends upon:

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

The device which can convert heat energy into electrical energy is called:

Tick the correct statement:

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:

In a metal, the valence electrons are:

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

In case of metallic conductors, the charge carriers are

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:

In case of metallic conductors, the charge carriers are

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

Kirchhoff's first rule is also called:

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

A rheostat can e used:

Most practical application of electricity involve

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

An ideal voltmeter has:

Static electricity is produced by the transfer of:

An electric field is generated along the wire when:

Gaussian surface is always:

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

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

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