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

As the current flow through the wire:

Question # 2

Which instrument is expensive and difficult to use?

Question # 3

The free electrons in metals:

Question # 4

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

Question # 5

The quantity having the same unit as that of emf is:

Question # 6

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

Question # 7

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

Question # 8

Most practical application of electricity involve

Question # 9

A thermistor is a resistor which is:

Question # 10

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

Question # 11

Most practical applications of electricity involve

Question # 12

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

Question # 13

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

Question # 14

In a metal, the valence electrons are:

Question # 15

The value of resistivity is the least for:

Question # 16

The value of relative permittivity of different dielectrics are:

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

Electrolysis is the study of conduction of electricity through:

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

Magnetic effect of current is used:

Question # 25

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 # 26

The charge carriers in an electrolyte are

Question # 27

Certain charge +q is placed at the center of a sphere. At each of the sphere,The directions of electric intensity and vector area are:

Question # 28

In a metal, the valence electrons are:

Question # 29

Heating effect of current utilized in:

Question # 30

Kirchhoff's first rule is also called:

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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

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
3 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
4 The electric flux through any surface depends upon:
A.

Intensity of electric field

B.

Area of the surface

C.

Angle between intensity and area

D.

All of these
5

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

Zero

B.

Much larger

C.

Larger

D.

Smaller
6 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
7 The term drift velocity is used when the ends of a wire are:
A.

Connected to a laser source

B.

Connected to a voltage source

C.

Not connected to a voltage source

D.

At different values of potential
8 An example of photoconductor is:
A.

Boron

B.

Carbon

C.

Iron

D.

Aluminum
9 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
10 The free electrons in metals:
A.

Are in random motion and their speed depends upon temperature

B.

Move in particular direction

C.

Move with speed of light

D.

Move such that their speed does not depend on their temperature

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