ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

The SI unit of magnetic induction is

Question # 2

The sources of magnetic field are

Question # 3

The field around a moving charge is called

Question # 4

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 5

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

Question # 6

if the field is directed along the normal to the area, then flux is:

Question # 7

The gavanometer constant of a moving coil galvanometer is given by

Question # 8

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

Question # 9

Flurescent screen is a screen where visible spot

Question # 10

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 11

Avo-meter is used of measure the

Question # 12

To convert galvanometer into ammeter we connect

Question # 13

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

Question # 14

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

Question # 15

Galvanometer is a device used for the detection of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron
2 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)
3 magnetic field is a:
A.

Vector quantity

B.

Scalar quantity

C.

Scalar as well as scalar quantity

D.

Any of (A) or (B)
4 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
5 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
6 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
7 When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into
A. Voltmeter
B. Avometer
C. Ammeter
D. None of these
8 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
9 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
10 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line

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