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

Question # 2

In a metal, the valence electrons are:

Question # 3

The obvious effect/s of current is/are:

Question # 4

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

Question # 5

The current that flows through the coil of a motor causes

Question # 6

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

Question # 7

Electrostatics is the branch of physics which deals with the study of electro charges:

Question # 8

Thermistors are prepared under

Question # 9

When two spherical conducting balls at different potentials are joined by metallic wire, the current starts:

Question # 10

The best conductor is:

Question # 11

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

Question # 12

An important part of photocopier is:

Question # 13

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

Question # 14

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

Question # 15

Most practical application of electricity involve

Question # 16

In case of metallic conductors, the change carries are:

Question # 17

The term drift velocity is used when the ends of a wire are:

Question # 18

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

Question # 19

The emf is measured in:

Question # 20

Kirchhoff's first rule is also called:

Question # 21

The electric flux through any surface depends upon:

Question # 22

A rheostat can e used:

Question # 23

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

Question # 24

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

Question # 25

Selenium is:

Question # 26

Magnetic effect of current is used:

Question # 27

Aluminum is a:

Question # 28

Static electricity is produced by the transfer of:

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

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
2 The flux through a closed surface depends upon:
A.

Shape of geometry of the closed surface

B.

Charge enclosed

C.

Nature of the medium

D.

Both (A) and (B)
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 The passage of current is accompanied by a magnetic field in the surrounding space:
A.

Always accompanied

B.

Sometimes accompanied

C.

Never accompanied

D. Any of above
5 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
6

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple
7

The example/s of non-electrical energy to electrical is/are:
A.

Chemical energy

B.

Mechanical energy

C.

Heat energy

D.

Both (A) and (B)
8

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)
9 Which instrument is expensive and difficult to use?
A. Voltmeter
B. Potentiometer
C. CRO
D. Both A and C
10 A thermistor is a resistor which is:
A. Light Sensitive
B. Heat Sensitive
C. Sound Sensitive
D. All of these

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