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 charge carriers in an electrolyte are

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

A rheostat can e used:

Question # 6

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

Question # 7

Most practical applications of electricity involve

Question # 8

Magnetic effect of current is used:

Question # 9

In case of metallic conductors, the change carries are:

Question # 10

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

Question # 11

The value of relative permittivity of different dielectrics are:

Question # 12

As the current flow through the wire:

Question # 13

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

Question # 14

An example of photoconductor is:

Question # 15

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

Question # 16

The charge carries in the electrolyte are:

Question # 17

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

Question # 18

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

Question # 19

Electric field lines emerge from the charge in:

Question # 20

In a metal, the valence electrons are:

Question # 21

Electric flux is:

Question # 22

The emf is measured in:

Question # 23

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

Question # 24

Kirchhoff's first rule is also called:

Question # 25

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

Question # 26

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

Question # 27

The value of resistivity is the least for:

Question # 28

The best conductor is:

Question # 29

The surface destiny of charge is defined is:

Question # 30

Most practical application of electricity involve

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 An example of photoconductor is:
A.

Boron

B.

Carbon

C.

Iron

D.

Aluminum
2 As the current flow through the wire:
A.

It generates heat in the wire

B.

It produces sound in the wire

C.

Resistance of the wire decreases

D.

Voltage across the ends is increased
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 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
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 magnitude of chemical Effects depends upon:
A.

Nature of liquid

B.

Quantity of Electricity passed through the liquid

C.

Color of the liquid

D.

Both (A) and (C)
7 An important part of photocopier is:
A.

Toner cartridge

B. Deflection plates

C.

Charging electrode

D.

Print head
8 An important part of inkjet printer is:
A. Toner
B.

Drum

C.

Deflection plates

D.

Heated roles
9 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
10 The surface destiny of charge is defined is:
A.

Charge per volume

B.

Mass per volume

C.

Charge per area

D.

Mass per area

Test Questions

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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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