Physics ECAT Pre Engineering Chapter 13 Current Electricity

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

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

Question # 2

In gases, the charge carries are:

Question # 3

The obvious effect/s of current is/are:

Question # 4

Static electricity is produced by the transfer of:

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The emf is measured in:

Question # 9

In a metal, the valence electrons are:

Question # 10

The value of resistivity is the least for:

Question # 11

As the current flow through the wire:

Question # 12

A field free region is found:

Question # 13

In gases, the charge carriers are:

Question # 14

The positive charge moving in one direction is equivalent in all external affects to a:

Question # 15

The free electrons in metals:

Question # 16

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

Question # 17

An electric field is generated along the wire when:

Question # 18

Electrolysis is the study of conduction of electricity through:

Question # 19

Thermistors are prepared under

Question # 20

An ideal voltmeter has:

Question # 21

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

Question # 22

The electric flux through any surface depends upon:

Question # 23

Most practical application of electricity involve

Question # 24

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

Question # 25

The fourth band is a:

Question # 26

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

Question # 27

The best conductor is:

Question # 28

Heating effect of current utilized in:

Question # 29

A thermistor is a resistor which is:

Question # 30

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

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ECAT Physics Chapter 13 Important MCQ's

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

Toner cartridge

B. Deflection plates

C.

Charging electrode

D.

Print head
2

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

Its shaft to revolve

B.

Its brushes to rotate

C.

Motor to move

D.

Its shafts to rotate
3

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

Chemical energy

B.

Mechanical energy

C.

Heat energy

D.

Both (A) and (B)
4 Gaussian surface is always:
A.

Rectangular

B.

Spherical

C.

Cylindrical

D.

Box shape
5 Xerography means:
A.

Dry writing

B. Wet writing

C.

Poor writing

D.

Excellent writing
6 Kirchhoff's first rule is also called:
A. Loop rule
B. Thumb rule
C. Point rule
D. Right hand rule
7 In case of metallic conductors, the charge carriers are
A. Protons
B. Electrons
C. Antiprotons
D. Positrons
8 Aluminum is a:
A.

Good insulator

B.

Bad conductor

C.

Both (A) and (B)

D.

Excellent conductor
9

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

Decreasing from zero to maximum

B.

Increasing from zero to maximum

C.

Decreasing from maximum to zero

D.

Increasing from maximum to zero
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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