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

Static electricity is produced by the transfer of:

Question # 2

The free electrons in metals:

Question # 3

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

Question # 4

Heating effect of current utilized in:

Question # 5

The surface destiny of charge is defined is:

Question # 6

Xerography means:

Question # 7

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

Question # 8

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

Question # 9

Electric flux is:

Question # 10

Thermistors are prepared under

Question # 11

Aluminum is a:

Question # 12

The current that flows through the coil of a motor causes:

Question # 13

Electrolysis is the study of conduction of electricity through:

Question # 14

Magnetic effect of current is used:

Question # 15

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

Question # 16

Electric field lines emerge from the charge in:

Question # 17

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

Question # 18

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

Question # 19

Gaussian surface is always:

Question # 20

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

Question # 21

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

Question # 22

The obvious effect/s of current is/are:

Question # 23

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

Question # 24

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

Question # 25

In a metal, the valence electrons are:

Question # 26

The current that flows through the coil of a motor causes

Question # 27

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

Question # 28

Which instrument is expensive and difficult to use?

Question # 29

As the current flow through the wire:

Question # 30

In gases, the charge carries are:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

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

No lines cross this area

B.

Maximum lines pass through this area

C.

The number of lines are between zero and maximum

D.

Both (A) and (B) correct
3 Magnetic effect of current is used:
A.

In electric motor

B.

To detect current

C.

To measure current

D.

All of these
4 Which instrument is expensive and difficult to use?
A. Voltmeter
B. Potentiometer
C. CRO
D. Both A and C
5

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
6 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
7 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
8 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
9 The number of field lines passing through unit area held perpendicular to the field lines represent:
A.

Flux in that region

B.

Intensity of the field

C.

Charge

D.

Area of the region
10

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

Cell

B.

Voltmeter

C.

Thermocouple

D.

Potentiometer

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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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