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

The current that flows through the coil of a motor causes

Question # 2

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

Question # 3

The obvious effect/s of current is/are:

Question # 4

A field free region is found:

Question # 5

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

Question # 6

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

Question # 7

An eV is unit of:

Question # 8

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

Question # 9

Most practical application of electricity involve

Question # 10

In case of metallic conductors, the charge carriers are

Question # 11

Thermistors are prepared under

Question # 12

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

Question # 13

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

Question # 14

The best conductor is:

Question # 15

In gases, the charge carries are:

Question # 16

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

Question # 17

The emf is measured in:

Question # 18

As the current flows through the wire

Question # 19

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

Question # 20

Field lines are closer to each other in the region where the field is:

Question # 21

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

Question # 22

The surface destiny of charge is defined is:

Question # 23

In case of metallic conductors, the charge carriers are

Question # 24

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

Question # 25

Which instrument is expensive and difficult to use?

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

A thermistor is a resistor which is:

Question # 30

A rheostat can e used:

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Sr.# Question Answer
1 Electrolysis is the study of conduction of electricity through:
A. Solids
B. Liquids
C. Gases
D. Plasma
2

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:
A.

Same

B.

Different

C.

Opposite to each other

D.

At 60º with each other
3 Magnetic effect of current is used:
A.

In electric motor

B.

To detect current

C.

To measure current

D.

All of these
4 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
5

Heating effect of current utilized in:
A.

Electric motor

B.

Electric toaster

C.

Electroplating

D.

Electric kettle
6

Two dissimilar metals joined at their ends kept at constant temperature constitute:
A.

Cell

B.

Voltmeter

C.

Thermocouple

D.

Potentiometer
7

The obvious effect/s of current is/are:
A.

Heating effect

B.

Magnetic effect

C.

Chemical effect

D.

Both (C) and (B)
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 shafts to rotate
9 Gaussian surface is always:
A.

Rectangular

B.

Spherical

C.

Cylindrical

D.

Box shape
10 A rheostat can e used:
A. As variable resistor
B. As potential divider
C. For varying the current
D. All of these

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