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

Question # 1

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 # 2

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 # 3

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 # 4

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 # 5

The free electrons in metals:

Are in random motion and their speed depends upon temperature
A
Move in particular direction
B
Move with speed of light
C
Move such that their speed does not depend on their temperature
D
None of these
E

Question # 6

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 # 7

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 # 8

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 # 9

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 # 10

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 # 11

The emf is measured in:

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

Question # 12

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

Question # 13

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 # 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 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 # 16

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 # 17

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 # 18

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 # 19

Gaussian surface is always:

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

Question # 20

Which instrument is expensive and difficult to use?

Voltmeter A
Potentiometer B
CRO C
Both A and C D
Both A and B E

Question # 21

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 # 22

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 # 23

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 # 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

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 # 26

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 # 27

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 # 28

The inkjet printer ejects a thin stream of:

Water
A
Oil
B
Ink
C
Any of above
D
None of these
E

Question # 29

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 # 30

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

Sr.#	Question	Answer
1	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
2	An important part of photocopier is:	A. Toner cartridge B. Deflection plates C. Charging electrode D. Print head
3	The third band of the colour code:	A. Gives the number of zeroes B. Is decimal multiplier C. Gives the resistance tolerance D. Gives the third digit
4	The obvious effect/s of current is/are:	A. Heating effect B. Magnetic effect C. Chemical effect D. Both (C) and (B)
5	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
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 surface destiny of charge is defined is:	A. Charge per volume B. Mass per volume C. Charge per area D. Mass per area
8	Electrolysis is the study of conduction of electricity through:	A. Solids B. Liquids C. Gases D. Plasma
9	In a metal, the valence electrons are:	A. Attach to individual atoms B. Not attached to individual atoms C. Free to move within the metal D. Both (A) and (C)
10	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