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

Which instrument is expensive and difficult to use?

Question # 2

The number of field lines passing through unit area held perpendicular to the field lines represent:

Question # 3

The free electrons in metals:

Question # 4

The electric flux through any surface depends upon:

Question # 5

The best conductor is:

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

Most practical applications of electricity involve

Question # 11

The fourth band is a:

Question # 12

Electric flux is:

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

The current that flows through the coil of a motor causes

Question # 17

Electric field lines emerge from the charge in:

Question # 18

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

Question # 19

Tick the correct statement:

Question # 20

As the current flows through the wire

Question # 21

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 # 22

The obvious effect/s of current is/are:

Question # 23

Kirchhoff's first rule is also called:

Question # 24

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

Question # 25

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

Question # 26

The charge carriers in an electrolyte are

Question # 27

Selenium is:

Question # 28

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

Question # 29

In case of metallic conductors, the change carries are:

Question # 30

Gaussian surface is always:

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 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
2 Electrolysis is the study of conduction of electricity through:
A. Solids
B. Liquids
C. Gases
D. Plasma
3 Gaussian surface is always:
A.

Rectangular

B.

Spherical

C.

Cylindrical

D.

Box shape
4 Kirchhoff's first rule is also called:
A. Loop rule
B. Thumb rule
C. Point rule
D. Right hand rule
5 A thermistor is a resistor which is:
A. Light Sensitive
B. Heat Sensitive
C. Sound Sensitive
D. All of these
6 Magnetic effect of current is used:
A.

In electric motor

B.

To detect current

C.

To measure current

D.

All of these
7 In gases, the charge carriers are:
A. Electrons
B. Positive ions
C. Negative ions
D. Both A and C
8 In a metal, the valence electrons are:
A. Attached to individual atoms
B. Not attached to individual atoms
C. Free to move within the metal
D. Both A and B
9 Thermistors are prepared under
A. High pressure and low temperature
B. High pressure and high temperature
C. Low pressure and low temperature
D. Low pressure and high temprature
10 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons

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