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

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Question # 1

An inkjet printer uses in its operation:

Question # 2

The surface destiny of charge is defined is:

Question # 3

The third band of the colour code:

Question # 4

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 # 5

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

Question # 6

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

Question # 7

Electric flux is:

Question # 8

Most practical application of electricity involve

Question # 9

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

Question # 10

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

Question # 11

In case of metallic conductors, the charge carriers are

Question # 12

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

Question # 13

The magnitude of chemical Effects depends upon:

Question # 14

The example/s of non-electrical energy to electrical is/are:

Question # 15

The charge carries in the electrolyte are:

Question # 16

The current that flows through the coil of a motor causes

Question # 17

Gaussian surface is always:

Question # 18

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

Question # 19

The free electrons in metals:

Question # 20

The obvious effect/s of current is/are:

Question # 21

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

Question # 22

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

Question # 23

The flux through a closed surface depends upon:

Question # 24

Selenium is:

Question # 25

The electric flux through any surface depends upon:

Question # 26

Aluminum is a:

Question # 27

In case of metallic conductors, the charge carriers are

Question # 28

A thermistor is a resistor which is:

Question # 29

Kirchhoff's first rule is also called:

Question # 30

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

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Sr.# Question Answer
1 An important part of photocopier is:
A.

Toner cartridge

B. Deflection plates

C.

Charging electrode

D.

Print head
2

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
3 Most practical applications of electricity involve
A. Charges at rest
B. Charges in motion
C. Electrons at rest
D. Atoms in motion
4 As the current flow through the wire:
A.

It generates heat in the wire

B.

It produces sound in the wire

C.

Resistance of the wire decreases

D.

Voltage across the ends is increased
5 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
6 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
7 An electric field is generated along the wire when:
A.

Its resistance is very high

B.

A constant potential is maintained across the wire

C.

Net current through the wire is zero

D.

A constant potential difference is maintained across the wire
8

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

Different

B.

Same

C.

Such that it is greater in the first case

D.

Such that it is greater in the second case
9 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
10

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

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