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

Magnetic flux and flux density are related by

Question # 2

Current is measured in

Question # 3

The CRO is used for displaying the waveform of a given

Question # 4

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

Question # 5

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

Question # 6

Which is modified form of galvanometer

Question # 7

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 # 8

The field around a moving charge is called

Question # 9

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

Question # 10

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

Question # 11

Ammeter is used to measure

Question # 12

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

Question # 13

The current sensitivity of the galvanometer is

Question # 14

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 15

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

Question # 16

The pointer of a magnetic compass:

Question # 17

When charged particle is projected perpendicular to a uniform magnetic field its trajectory is

Question # 18

A resistance used in voltmeter is called

Question # 19

The torque per unit twist of coil is called

Question # 20

The strength of magnetic field around the current conductor is

Question # 21

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 22

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 # 23

It is customary represent a current flowing towards the reader by a symbol

Question # 24

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

Question # 25

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

Question # 26

F = I(L x B) is a

Question # 27

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 28

Magnetic lines of force:

Question # 29

A resistance used in galvanometer to make it voltmeter is called

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
2 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
3 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
4 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
5 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
6 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
7 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
8 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
9 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
10 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

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