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

Question # 2

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

Question # 3

The free electrons in metals:

Question # 4

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

Question # 5

The third band of the colour code:

Question # 6

An example of photoconductor is:

Question # 7

The inkjet printer ejects a thin stream of:

Question # 8

The emf is measured in:

Question # 9

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

Question # 10

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

Question # 11

Gaussian surface is always:

Question # 12

In case of metallic conductors, the charge carriers are

Question # 13

The magnitude of chemical Effects depends upon:

Question # 14

As the current flow through the wire:

Question # 15

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

Question # 16

The obvious effect/s of current is/are:

Question # 17

The value of resistivity is the least for:

Question # 18

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

Question # 19

In a metal, the valence electrons are:

Question # 20

The value of relative permittivity of different dielectrics are:

Question # 21

The current that flows through the coil of a motor causes

Question # 22

The flux through a closed surface depends upon:

Question # 23

Most practical application of electricity involve

Question # 24

Electric field lines emerge from the charge in:

Question # 25

Aluminum is a:

Question # 26

Kirchhoff's first rule is also called:

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

In case of metallic conductors, the charge carriers are

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 Most practical application of electricity involve
A.

Charges at the rest

B.

Charges in the motion

C.

Electrons at rest

D.

Atoms in motion
2 The best conductor is:
A. Silver
B. Copper
C. Aluminimum
D. Both B and C
3 An eV is unit of:
A.

Potential

B.

Energy

C.

Work

D.

Power
4 In gases, the charge carriers are:
A. Electrons
B. Positive ions
C. Negative ions
D. Both A and C
5 Kirchhoff's first rule is also called:
A. Loop rule
B. Thumb rule
C. Point rule
D. Right hand rule
6

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)
7 The inkjet printer ejects a thin stream of:
A.

Water

B.

Oil

C.

Ink

D.

Any of above
8

Electric flux is:
A. Cross product of two vector

B.

Dot product of two vectors

C.

A vector quantity

D.

A scalar quantity
9

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

Primary cell

B.

Secondary cell

C.

Both (A) and (B)

D.

Photovoltaic cell
10 The positive charge moving in one direction is equivalent in all external affects to a:
A.

Negative charge is moving in the same direction

B.

Positive charge is moving in the opposite direction

C.

Negative charge moving in the opposite direction

D.

Positive charges moving in the same direction

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