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 solenoid is a coil of wire which is:

Question # 2

A current carrying conductor sets up its own:

Question # 3

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 # 4

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 # 5

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

Question # 6

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

Question # 7

Which is modified form of galvanometer

Question # 8

The strength of magnetic field around the current conductor is

Question # 9

The current sensitivity of the galvanometer is

Question # 10

How many number of anodes used in electron gun

Question # 11

The SI unit of flux density is.

Question # 12

Which one of the following relations is correct?

Question # 13

The CRO is used for displaying the waveform of a given

Question # 14

In the formula B= µ̻ nl, the symbol n denotes:

Question # 15

Galvanometer is a device used for the detection of

Question # 16

The most suitable material for permanent magnet is

Question # 17

The current is measured in

Question # 18

To convert galvanometer into ammeter we connect

Question # 19

Tesla is the unit of

Question # 20

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 21

'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?

Question # 22

In a moving coil galvanometer, the deflecting couple depends upon

Question # 23

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 # 24

The torque per unit twist of coil is called

Question # 25

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

Question # 26

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 # 27

The voltage increases linearly with

Question # 28

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

Question # 29

Magnetic lines of force:

Question # 30

A resistance used in voltmeter is called

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
2 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
3

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
4 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
5 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
6 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
7 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
8 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
9 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
10 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

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