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

The emf is measured in:

Question # 2

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

Question # 3

The electric flux through any surface depends upon:

Question # 4

In case of two identical charges placed certain distance apart, the electric field lines are:

Question # 5

Electric field lines emerge from the charge in:

Question # 6

Most practical application of electricity involve

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The strength of magnetic field at certain points around a wire depends upon:

Question # 11

Static electricity is produced by the transfer of:

Question # 12

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

Question # 13

Xerography means:

Question # 14

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

Question # 15

A thermistor is a resistor which is:

Question # 16

The obvious effect/s of current is/are:

Question # 17

The value of relative permittivity of different dielectrics are:

Question # 18

An eV is unit of:

Question # 19

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

Question # 20

Magnetic effect of current is used:

Question # 21

An important part of inkjet printer is:

Question # 22

In gases, the charge carriers are:

Question # 23

The fourth band is a:

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

Electric flux is:

Question # 28

The free electrons in metals:

Question # 29

Kirchhoff's first rule is also called:

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 The surface destiny of charge is defined is:
A.

Charge per volume

B.

Mass per volume

C.

Charge per area

D.

Mass per area
2 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
3

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
4 In gases, the charge carriers are:
A. Electrons
B. Positive ions
C. Negative ions
D. Both A and C
5

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)
6 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)
7 The value of relative permittivity of different dielectrics are:
A.

Equal

B.

Different

C.

Greater than one

D.

Smaller than one
8 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
9

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

Be zero

B.

Be maintained constant

C.

Goes on increasing

D.

Go on decreasing
10 Static electricity is produced by the transfer of:
A.

Electrons

B.

Protons

C.

One fluid

D.

Two fluids

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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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