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 galvanometer is an instrument used to

Question # 2

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

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

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

Question # 5

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

Question # 6

Electron gun consist of

Question # 7

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 8

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

Question # 9

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

Question # 10

The current sensitivity of the galvanometer is

Question # 11

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

Question # 12

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 # 13

F = I(L x B) is a

Question # 14

Avo-meter is used of measure the

Question # 15

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

Question # 16

The CRO is used for displaying the waveform of a given

Question # 17

the current is pass through the straight wire. The magnetic field established around it has its lines of force:

Question # 18

Lorentz force is defined as

Question # 19

magnetic field is a:

Question # 20

Current is measured in

Question # 21

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

Question # 22

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

Question # 23

The angle of deflection of coil can be measured by the

Question # 24

A long wire wound tightly on a cylindrical core is called:

Question # 25

Ammeter is used to measure

Question # 26

The torque per unit twist of coil is called

Question # 27

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

Question # 28

The pointer of a magnetic compass:

Question # 29

Flurescent screen is a screen where visible spot

Question # 30

CRO deflects the beam of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
2 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
3 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
4 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
5 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
6 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
7 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
8 The SI unit of magnetic induction is tesla which is equal to
A. Newton/ampere-meter or N/A-m
B. Newton/ampere2-meter or N/A2-m
C. Newton/ampere2-meter2 or N/A2-m2
D. Newton/ampere2-meter2or N/A2-m2
9

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
10 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small

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