ECAT Pre Engineering Physics Chapter 13 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 13 Current Electricity

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 13 Current Electricity

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Physics ECAT Pre Engineering Chapter 13 Current Electricity

00:00
Question # 1

In gases, the charge carries are:

Question # 2

In case of metallic conductors, the charge carriers are

Question # 3

The value of relative permittivity of different dielectrics are:

Question # 4

In a metal, the valence electrons are:

Question # 5

An example of photoconductor is:

Question # 6

The charge carriers in an electrolyte are

Question # 7

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

Question # 8

In gases, the charge carriers are:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

In case of metallic conductors, the change carries are:

Question # 13

The inkjet printer ejects a thin stream of:

Question # 14

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

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

The fourth band is a:

Question # 20

The third band of the colour code:

Question # 21

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

Question # 22

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

Question # 23

In case of metallic conductors, the charge carriers are

Question # 24

Selenium is:

Question # 25

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

Question # 26

Electric field lines emerge from the charge in:

Question # 27

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:

Question # 28

Tick the correct statement:

Question # 29

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

Question # 30

Aluminum is a:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

The obvious effect/s of current is/are:
A.

Heating effect

B.

Magnetic effect

C.

Chemical effect

D.

Both (C) and (B)
2

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
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 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
5 The value of relative permittivity of different dielectrics are:
A.

Equal

B.

Different

C.

Greater than one

D.

Smaller than one
6 Another mean of electric potential energy per unit charge is given by:
A.

Electric intensity

B.

Potential gradient

C.

Electric Flux

D.

Potential difference
7 In gases, the charge carriers are:
A. Electrons
B. Positive ions
C. Negative ions
D. Both A and C
8 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
9 The inkjet printer ejects a thin stream of:
A.

Water

B.

Oil

C.

Ink

D.

Any of above
10 The positive charge moving in one direction is equivalent in all external affects to a:
A.

Negative charge is moving in the same direction

B.

Positive charge is moving in the opposite direction

C.

Negative charge moving in the opposite direction

D.

Positive charges moving in the same direction

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  • Hamza

    Hamza

    17 Aug 2019

    It has many error

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  • Salmankhan

    Salmankhan

    02 Feb 2018

    Sir g plz correct this mcq the device which convert electrical into machinical is called moter but here the answer is generator

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