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

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

Question # 2

A resistance used in galvanometer to make it voltmeter is called

Question # 3

Ammeter is used to measure

Question # 4

The pointer of a magnetic compass:

Question # 5

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

Question # 6

A field is uniform and much stronger:

Question # 7

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 8

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

Question # 9

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

Question # 10

The current is measured in

Question # 11

The SI unit of magnetic permeability is

Question # 12

Magnetic induction is also called as:

Question # 13

The most suitable material for permanent magnet is

Question # 14

Electron gun consist of

Question # 15

A beam of electrons is provided by an

Question # 16

The magnetic field outside the solenoid due to current is

Question # 17

The torque per unit twist of coil is called

Question # 18

A galvanometer is an instrument used to

Question # 19

The voltage increases linearly with

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

A voltmeter is used to measure the

Question # 22

The field around a moving charge is called

Question # 23

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

Question # 24

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

Question # 25

A current carrying conductor sets up its own:

Question # 26

Magnetic lines of force:

Question # 27

How many number of anodes used in electron gun

Question # 28

A solenoid is a coil of wire which is:

Question # 29

The CRO is used for displaying the waveform of a given

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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)
2 Which is modified form of galvanometer
A. potentiometer
B. battery
C. voltmeter
D. slide wire bridge
3 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
4 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
5 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
6 If current through conductor is 1 A and length of conductor is 1m placed at right angle to the magnetic field, then the strength of magnetic field is
A. F = B2
B. F = 0
C. F = B
D. F = B/2
7 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
8 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
9 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
10 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these

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