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 charge carriers in an electrolyte are

Question # 2

In case of metallic conductors, the charge carriers are

Question # 3

An ideal voltmeter has:

Question # 4

Xerography means:

Question # 5

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

Question # 6

Magnetic effect of current is used:

Question # 7

A rheostat can e used:

Question # 8

Selenium is:

Question # 9

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

Question # 10

The value of resistivity is the least for:

Question # 11

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

Question # 12

The current that flows through the coil of a motor causes

Question # 13

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

Question # 14

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 # 15

In case of metallic conductors, the charge carriers are

Question # 16

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

Question # 17

As the current flows through the wire

Question # 18

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

Question # 19

In a metal, the valence electrons are:

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s

Question # 24

An example of photoconductor is:

Question # 25

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

Question # 26

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

Question # 27

Aluminum is a:

Question # 28

Static electricity is produced by the transfer of:

Question # 29

A thermistor is a resistor which is:

Question # 30

Which instrument is expensive and difficult to use?

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ECAT Physics Chapter 13 Important MCQ's

Sr.# Question Answer
1 A thermistor is a resistor which is:
A. Light Sensitive
B. Heat Sensitive
C. Sound Sensitive
D. All of these
2 Which of the following substances has got positive temperature coefficient of resistance?
A. Carbon
B. Germanium
C. Silicon
D. Aluminium
3

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
4

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

Protons

B.

Electrons

C.

Antiprotons

D.

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

The ends of the wire only

B.

Mid points of the wire only

C.

Every point within the wire

D.

At nodes only
6 The earth’s potential and potential at infinity are taken:
A.

Equal

B.

Zero

C.

First is greater than the second

D.

Second is greater than the first
7 An eV is unit of:
A.

Potential

B.

Energy

C.

Work

D.

Power
8 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)
9 A current of 1 ampere is passing through a conductor. The charge passing through it in half a minute s
A. One coulomb
B. 0.5 coulomb
C. 30 coulombs
D. 2 coulombs
10 The value of relative permittivity of different dielectrics are:
A.

Equal

B.

Different

C.

Greater than one

D.

Smaller than one

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