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 earth’s potential and potential at infinity are taken:

Question # 2

An eV is unit of:

Question # 3

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

Question # 4

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

Question # 5

Gaussian surface is always:

Question # 6

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

Question # 7

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

Question # 8

The fourth band is a:

Question # 9

Most practical applications of electricity involve

Question # 10

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

Question # 11

Selenium is:

Question # 12

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

Question # 13

In case of two identical charges placed certain distance apart, the electric field lines are:

Question # 14

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

Question # 15

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

Question # 16

In a metal, the valence electrons are:

Question # 17

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

Question # 18

Electrolysis is the study of conduction of electricity through:

Question # 19

An example of photoconductor is:

Question # 20

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

Question # 21

An important part of photocopier is:

Question # 22

In case of metallic conductors, the charge carriers are

Question # 23

The charge carries in the electrolyte are:

Question # 24

Static electricity is produced by the transfer of:

Question # 25

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

Question # 26

A thermistor is a resistor which is:

Question # 27

In gases, the charge carriers are:

Question # 28

Which of the following substances has got positive temperature coefficient of resistance?

Question # 29

In a metal, the valence electrons are:

Question # 30

As the current flow through the wire:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1

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

Decreasing from zero to maximum

B.

Increasing from zero to maximum

C.

Decreasing from maximum to zero

D.

Increasing from maximum to zero
2

The charge carries in the electrolyte are:
A.

Positive ions

B.

Negative ions

C.

Either (A) or (B)

D.

Both (A) and (B)
3 In a metal, the valence electrons are:
A.

Attach to individual atoms

B.

Not attached to individual atoms

C.

Free to move within the metal

D.

Both (A) and (C)
4 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
5

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
6 The current that flows through the coil of a motor causes
A. Its shaft to revolve
B. Its brushes to rotate
C. Motor to move
D. Its shaft to rotate
7

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

One coulomb

B.

0.5 coulomb

C.

30 coulomb

D.

2 coulombs
8 Tick the correct statement:
A.

Both the potential and potential difference is scalars

B.

Potential is a scalar but potential difference is a vector

C. Both are vectors

D.

Potential is vector but potential difference is scalar
9 The fourth band is a:
A. Silver band
B. Red band
C. Gold band
D. Either A or C
10 The value of resistivity is the least for:
A. Copper
B. Aluminimum
C. Silver
D. Tungsten

Test Questions