ECAT Pre General Science Physics Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 14 Electromagnetism

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ECAT Pre General Science Physics Chapter 14 Electromagnetism

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Question # 1

In the formula B= µ̻ nl, the symbol n denotes:

Question # 2

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 3

Centripetal force for electron is given by

Question # 4

Magnetic flux and flux density are related by

Question # 5

Ammeter is used to measure

Question # 6

Flurescent screen is a screen where visible spot

Question # 7

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 8

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 9

A resistance used in voltmeter is called

Question # 10

How many number of anodes used in electron gun

Question # 11

When current passes through a solenoid coil, it behaves like a

Question # 12

The force experienced by charged particle is maximum, if it moves

Question # 13

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 14

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 15

The current sensitivity of the galvanometer is

Question # 16

magnetic field is a:

Question # 17

Current is measured in

Question # 18

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 19

The torque per unit twist of coil is called

Question # 20

A voltmeter is used to measure the

Question # 21

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 22

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 23

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 24

To convert galvanometer into ammeter we connect

Question # 25

Electron gun consist of

Question # 26

Amperean path is a:

Question # 27

In a moving coil galvanometer, the deflecting couple depends upon

Question # 28

The SI unit of magnetic permeability is

Question # 29

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 30

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
2 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
3 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)
4 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
5 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
6 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
7 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
8 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
9 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
10 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt

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