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

How many number of anodes used in electron gun

Question # 2

To convert galvanometer into ammeter we connect

Question # 3

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 4

Flurescent screen is a screen where visible spot

Question # 5

Ammeter is used to measure

Question # 6

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 7

It is customary represent a current flowing towards the reader by a symbol

Question # 8

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 9

A resistance used in galvanometer to make it voltmeter is called

Question # 10

The strength of magnetic field around the current conductor is

Question # 11

In the expression of force experienced by electron, the direction of both v and B are

Question # 12

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 13

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 14

Current is measured in

Question # 15

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 16

Weber is a unit of

Question # 17

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 18

The SI unit of magnetic induction is

Question # 19

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 20

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 21

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 22

In a moving coil galvanometer, the deflecting couple depends upon

Question # 23

If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is

Question # 24

Galvanometer is a device used for the detection of

Question # 25

Strength of magnetic field is measured in SI units, in:

Question # 26

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 27

Avo-meter is used of measure the

Question # 28

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

Question # 29

F = I(L x B) is a

Question # 30

The SI unit of flux density is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
2 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
3 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
4 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
5 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
6 A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is
A. 5N
B. 4N
C. 1.5N
D. 6N
7 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
8 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
9 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
10 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point

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