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

Centripetal force for electron is given by

Question # 2

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

Question # 3

NmA-1 is commonly called:

Question # 4

The SI unit of magnetic induction is

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The voltage increases linearly with

Question # 9

Tesla is the unit of

Question # 10

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 # 11

Magnetic flux and flux density are related by

Question # 12

The most suitable material for permanent magnet is

Question # 13

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 # 14

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

Question # 15

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 16

The magnetic field inside a solenoid can be increased by:

Question # 17

The SI unit of flux density is

Question # 18

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

Question # 19

The field around a moving charge is called

Question # 20

A galvanometer is an instrument used to

Question # 21

CRO deflects the beam of

Question # 22

A voltmeter is used to measure the

Question # 23

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 24

The magnetic field in the middle of a solenoid due to current is

Question # 25

Flurescent screen is a screen where visible spot

Question # 26

The CRO is used for displaying the waveform of a given

Question # 27

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

Question # 28

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 29

The current sensitivity of the galvanometer is

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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)
2 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
3 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
4 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
5 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
6 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity
7 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
8 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
9 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
10 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A

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