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

As the current flow through the wire:

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

Gaussian surface is always:

Question # 7

The value of resistivity is the least for:

Question # 8

An important part of photocopier is:

Question # 9

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

Question # 10

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

Question # 11

In gases, the charge carries are:

Question # 12

The best conductor is:

Question # 13

Kirchhoff's first rule is also called:

Question # 14

The emf is measured in:

Question # 15

An example of photoconductor is:

Question # 16

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

Question # 17

Xerography means:

Question # 18

A field free region is found:

Question # 19

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

Question # 20

The charge carriers in an electrolyte are

Question # 21

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

Question # 22

The inkjet printer ejects a thin stream of:

Question # 23

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

Question # 24

In a metal, the valence electrons are:

Question # 25

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

Question # 26

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

Question # 27

As the current flows through the wire

Question # 28

The third band of the colour code:

Question # 29

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

Question # 30

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

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

No lines cross this area

B.

Maximum lines pass through this area

C.

The number of lines are between zero and maximum

D.

Both (A) and (B) correct
3 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
4

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

One coulomb

B.

0.5 coulomb

C.

30 coulomb

D.

2 coulombs
5 The number of field lines passing through unit area held perpendicular to the field lines represent:
A.

Flux in that region

B.

Intensity of the field

C.

Charge

D.

Area of the region
6

An inkjet printer uses in its operation:
A.

Neutrons only

B.

Mesons only

C.

Positrons and photons

D.

An electric charge
7

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
8 The quantity having the same unit as that of emf is:
A. Force
B. Energy
C. Potential
D. Current
9 As the current flows through the wire
A. It generates heat in the wire
B. It produces sound in the wire
C. Resistance of the wire decrease
D. Voltage across the ends is the increase
10 Which instrument is expensive and difficult to use?
A. Voltmeter
B. Potentiometer
C. CRO
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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