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

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

Question # 2

Current is measured in

Question # 3

The SI unit of flux density is

Question # 4

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 5

A voltmeter is used to measure the

Question # 6

Which one of the following relations is correct?

Question # 7

Tesla is the unit of

Question # 8

Amperean path is a:

Question # 9

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

Question # 10

A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is

Question # 11

Ammeter is used to measure

Question # 12

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 13

The current sensitivity of the galvanometer is

Question # 14

Flurescent screen is a screen where visible spot

Question # 15

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

Question # 16

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

Question # 17

Magnetic induction is also called as:

Question # 18

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

Question # 19

The unit of flux density is also given by

Question # 20

Avo-meter is used of measure the

Question # 21

A current carrying conductor sets up its own:

Question # 22

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

Question # 23

Method "lamp and scale arrangement" used to measure the

Question # 24

Weber is a unit of

Question # 25

Electron gun consist of

Question # 26

A solenoid is a coil of wire which is:

Question # 27

The strength of magnetic field around the current conductor is

Question # 28

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

Question # 29

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 30

A field is uniform and much stronger:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
2 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
3 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
4 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
5 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
6 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
7 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
8 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
9 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
10 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these

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