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 value of relative permittivity of different dielectrics are:

Question # 2

Electrolysis is the study of conduction of electricity through:

Question # 3

Magnetic effect of current is used:

Question # 4

In gases, the charge carriers are:

Question # 5

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 # 6

In a metal, the valence electrons are:

Question # 7

In case of metallic conductors, the charge carriers are

Question # 8

The charge carries in the electrolyte are:

Question # 9

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

Question # 10

An eV is unit of:

Question # 11

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

Question # 12

In gases, the charge carries are:

Question # 13

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

Question # 14

As the current flows through the wire

Question # 15

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

Question # 16

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

Question # 17

A thermistor is a resistor which is:

Question # 18

When resistance of a current carrying wire increases due to rise in temperature, the drift velocity of electrons:

Question # 19

An inkjet printer uses in its operation:

Question # 20

The surface destiny of charge is defined is:

Question # 21

An example of photoconductor is:

Question # 22

Thermistors are prepared under

Question # 23

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

Question # 24

Heating effect of current utilized in:

Question # 25

An electric field is generated along the wire when:

Question # 26

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

Question # 27

The strength of magnetic field at certain points around a wire depends upon:

Question # 28

In a metal, the valence electrons are:

Question # 29

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

Question # 30

An important part of inkjet printer is:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 A field free region is found:
A.

Near the outer surface of a hollow charged metal sphere

B.

In the interior of solid metal uncharged sphere

C.

In the interior of solid metal charged sphere

D.

Both (A) and (B)
2 Static electricity is produced by the transfer of:
A.

Electrons

B.

Protons

C.

One fluid

D.

Two fluids
3

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

Straight lines

B.

Sine curves

C.

Curved

D.

Both (A) and (B)
4

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
5

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

Zero

B.

Much larger

C.

Larger

D.

Smaller
6

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

At rest

B.

At rest under the action of electric forces

C.

In motion under the action of electric forces

D.

In motion
7 An important part of inkjet printer is:
A. Toner
B.

Drum

C.

Deflection plates

D.

Heated roles
8 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
9 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
10 The emf is measured in:
A. Newton
B. Volt
C. J/C
D. Both A and B

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