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

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 2

The SI unit of magnetic induction is tesla which is equal to

Question # 3

The sources of magnetic field are

Question # 4

Galvanometer is a device used for the detection of

Question # 5

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

Question # 6

The vector representation of force experience give the direction of

Question # 7

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

Question # 8

CRO deflects the beam of

Question # 9

The field around a moving charge is called

Question # 10

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

Question # 11

In the region surrounding a current carrying wire:

Question # 12

The unit of flux density is also given by

Question # 13

The current sensitivity of the galvanometer is

Question # 14

Current is measured in

Question # 15

The most suitable material for permanent magnet is

Question # 16

Resistance is measured in

Question # 17

A charged particle moving at right angle to the magnetic field will experience

Question # 18

F = I(L x B) is a

Question # 19

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 # 20

The force acting on a charge moving in a magnetic field

Question # 21

Electron gun consist of

Question # 22

A resistance used in galvanometer to make it voltmeter is called

Question # 23

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 24

To convert galvanometer into ammeter we connect

Question # 25

For the conversion of galvanometer into voltmeter, we connect a

Question # 26

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

Question # 27

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

Question # 28

The CRO is used for displaying the waveform of a given

Question # 29

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

Question # 30

The magnetic field outside the solenoid due to current is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
2 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
3 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
4 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
5 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
6 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
7 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
8 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
9 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
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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