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

Question # 2

Ammeter is used to measure

Question # 3

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

Question # 4

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 # 5

Magnetic flux and flux density are related by

Question # 6

Lorentz force is defined as

Question # 7

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

Question # 8

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

Question # 9

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

Question # 10

The sources of magnetic field are

Question # 11

Which one of the following relations is correct?

Question # 12

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 13

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

Question # 14

Magnetic induction is also called as:

Question # 15

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

Question # 16

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 17

The gavanometer constant of a moving coil galvanometer is given by

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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 # 22

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 23

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

Question # 24

The unit of flux density is also given by

Question # 25

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

Question # 26

Avo-meter is used of measure the

Question # 27

Magnetic lines of force:

Question # 28

The pointer of a magnetic compass:

Question # 29

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

Question # 30

A current carrying conductor sets up its own:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
2 The SI unit of flux density is.
A. Tesla
B. Weber
C. Gaun
D. Weber/meter
3 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
4 A resistance used in galvanometer to make it voltmeter is called
A. shunt resistance
B. high resistance
C. zero resistance
D. none of these
5 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
6 A galvanometer is an instrument used to
A. measure voltage across a circuit
B. detect current in a circuit
C. measure current flowing through a circuit
D. none of these
7 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
8 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
9 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
10 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A

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