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

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Question # 1

In case of metallic conductors, the charge carriers are

Question # 2

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

Question # 3

The value of resistivity is the least for:

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

An example of photoconductor is:

Question # 9

The magnitude of chemical Effects depends upon:

Question # 10

In case of metallic conductors, the charge carriers are

Question # 11

The best conductor is:

Question # 12

Electric field lines emerge from the charge in:

Question # 13

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

Question # 14

The obvious effect/s of current is/are:

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

The fourth band is a:

Question # 19

Most practical application of electricity involve

Question # 20

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

Question # 21

An important part of photocopier is:

Question # 22

Aluminum is a:

Question # 23

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

Question # 24

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

Question # 25

An inkjet printer uses in its operation:

Question # 26

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

Question # 27

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

Question # 28

The third band of the colour code:

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 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
2 Electric field lines emerge from the charge in:
A.

One dimension

B.

Two dimensions

C.

Three dimensions

D.

Four dimensions
3 The best conductor is:
A. Silver
B. Copper
C. Aluminimum
D. Both B and C
4 An example of photoconductor is:
A.

Boron

B.

Carbon

C.

Iron

D.

Aluminum
5 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
6

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

Zero

B.

Much larger

C.

Larger

D.

Smaller
7 Static electricity is produced by the transfer of:
A.

Electrons

B.

Protons

C.

One fluid

D.

Two fluids
8 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
9

The charge carries in the electrolyte are:
A.

Positive ions

B.

Negative ions

C.

Either (A) or (B)

D.

Both (A) and (B)
10

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

Thermistor

B.

Thermometer

C.

Thermostat

D.

Thermocouple

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