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

Electrolysis is the study of conduction of electricity through:

Question # 2

Tick the correct statement:

Question # 3

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

Question # 4

An electric field is generated along the wire when:

Question # 5

Which instrument is expensive and difficult to use?

Question # 6

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

Question # 7

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

Question # 8

Aluminum is a:

Question # 9

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

Question # 10

The current that flows through the coil of a motor causes

Question # 11

Selenium is:

Question # 12

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

Question # 13

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

Question # 14

The value of relative permittivity of different dielectrics are:

Question # 15

The inkjet printer ejects a thin stream of:

Question # 16

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

Question # 17

The value of resistivity is the least for:

Question # 18

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

Question # 19

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

Question # 20

A field free region is found:

Question # 21

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

Question # 22

A thermistor is a resistor which is:

Question # 23

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

Question # 24

An important part of photocopier is:

Question # 25

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

Question # 26

The surface destiny of charge is defined is:

Question # 27

The obvious effect/s of current is/are:

Question # 28

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

Question # 29

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

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 Selenium is:
A.

An insulator

B.

A conductor

C.

Insulator in the dark and becomes conductor when exposed to light

D.

Conductor in the dark only
2 Electric field lines emerge from the charge in:
A.

One dimension

B.

Two dimensions

C.

Three dimensions

D.

Four dimensions
3 The charge carriers in an electrolyte are
A. Positive ions
B. Negative ions
C. Either A or B
D. Both A and B
4 The inkjet printer ejects a thin stream of:
A.

Water

B.

Oil

C.

Ink

D.

Any of above
5 Another mean of electric potential energy per unit charge is given by:
A.

Electric intensity

B.

Potential gradient

C.

Electric Flux

D.

Potential difference
6 The value of resistivity is the least for:
A. Copper
B. Aluminimum
C. Silver
D. Tungsten
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 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 shaft to rotate
9 Magnetic effect of current is used:
A.

In electric motor

B.

To detect current

C.

To measure current

D.

All of these
10 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)

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