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 emf is measured in:

Question # 2

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

Question # 3

Thermistors are prepared under

Question # 4

The charge carries in the electrolyte are:

Question # 5

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

Question # 6

An important part of photocopier is:

Question # 7

Selenium is:

Question # 8

An eV is unit of:

Question # 9

Which instrument is expensive and difficult to use?

Question # 10

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

Question # 11

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

Question # 12

A rheostat can e used:

Question # 13

The charge carriers in an electrolyte are

Question # 14

The current that flows through the coil of a motor causes:

Question # 15

Kirchhoff's first rule is also called:

Question # 16

The inkjet printer ejects a thin stream of:

Question # 17

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

Question # 18

Electric field lines emerge from the charge in:

Question # 19

The interior of a hollow charged metal sphere is a region which:

Question # 20

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

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

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

Question # 23

Electric flux is:

Question # 24

A thermistor is a resistor which is:

Question # 25

As the current flows through the wire

Question # 26

Aluminum is a:

Question # 27

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

Question # 28

Heating effect of current utilized in:

Question # 29

Static electricity is produced by the transfer of:

Question # 30

In a metal, the valence electrons are:

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ECAT Physics Chapter 13 Important MCQ's

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

The obvious effect/s of current is/are:
A.

Heating effect

B.

Magnetic effect

C.

Chemical effect

D.

Both (C) and (B)
3 The third band of the colour code:
A. Gives the number of zeroes
B. Is decimal multiplier
C. Gives the resistance tolerance
D. Gives the third digit
4

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

Be zero

B.

Be maintained constant

C.

Goes on increasing

D.

Go on decreasing
5 The conventional current is the name given to current due to flow of
A. Positrons
B. Positive charges
C. Negative charges
D. Both A and C
6 The term drift velocity is used when the ends of a wire are:
A.

Connected to a laser source

B.

Connected to a voltage source

C.

Not connected to a voltage source

D.

At different values of potential
7 The best conductor is:
A. Silver
B. Copper
C. Aluminimum
D. Both B and C
8 The charge carriers in an electrolyte are
A. Positive ions
B. Negative ions
C. Either A or B
D. Both A and B
9 An example of photoconductor is:
A.

Boron

B.

Carbon

C.

Iron

D.

Aluminum
10

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)

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