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

An electric field is generated along the wire when:

Question # 2

Most practical applications of electricity involve

Question # 3

Another mean of electric potential energy per unit charge is given by:

Question # 4

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

Question # 5

The obvious effect/s of current is/are:

Question # 6

The best conductor is:

Question # 7

In gases, the charge carriers are:

Question # 8

Selenium is:

Question # 9

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

Question # 10

The current that flows through the coil of a motor causes

Question # 11

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

Question # 12

Field lines are closer to each other in the region where the field is:

Question # 13

Electric field lines emerge from the charge in:

Question # 14

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

Question # 15

Aluminum is a:

Question # 16

In case of metallic conductors, the charge carriers are

Question # 17

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 # 18

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

Question # 19

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

Question # 20

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 # 21

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

Question # 22

The emf is measured in:

Question # 23

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

Question # 24

An important part of inkjet printer is:

Question # 25

An important part of photocopier is:

Question # 26

A field free region is found:

Question # 27

Most practical application of electricity involve

Question # 28

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

Question # 29

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

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

Electric flux is:
A. Cross product of two vector

B.

Dot product of two vectors

C.

A vector quantity

D.

A scalar quantity
2

In case of metallic conductors, the change carries are:
A.

Protons

B.

Electrons

C.

Antiprotons

D.

Positrons
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 Selenium is:
A.

An insulator

B.

A conductor

C.

Insulator in the dark and becomes conductor when exposed to light

D.

Conductor in the dark only
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 flux through a closed surface depends upon:
A.

Shape of geometry of the closed surface

B.

Charge enclosed

C.

Nature of the medium

D.

Both (A) and (B)
7 Electrolysis is the study of conduction of electricity through:
A. Solids
B. Liquids
C. Gases
D. Plasma
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 Most practical application of electricity involve
A.

Charges at the rest

B.

Charges in the motion

C.

Electrons at rest

D.

Atoms in motion
10 In gases, the charge carriers are:
A. Electrons
B. Positive ions
C. Negative ions
D. Both A and C

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  • Hamza

    Hamza

    17 Aug 2019

    It has many error

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  • Salmankhan

    Salmankhan

    02 Feb 2018

    Sir g plz correct this mcq the device which convert electrical into machinical is called moter but here the answer is generator

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