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 resistance used in voltmeter is called

Question # 2

The SI unit of magnetic flux is

Question # 3

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

Question # 4

The angle of deflection of coil can be measured by the

Question # 5

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 6

The current is measured in

Question # 7

In a moving coil galvanometer, the deflecting couple depends upon

Question # 8

A resistance used in galvanometer to make it voltmeter is called

Question # 9

The most suitable material for permanent magnet is

Question # 10

NmA-1 is commonly called:

Question # 11

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 12

Avo-meter is used of measure the

Question # 13

The force experienced by charged particle is maximum, if it moves

Question # 14

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 15

magnetic field is a:

Question # 16

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

Question # 17

The CRO is used for displaying the waveform of a given

Question # 18

Flurescent screen is a screen where visible spot

Question # 19

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 # 20

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

Question # 21

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

Question # 22

The vector representation of force experience give the direction of

Question # 23

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

Question # 24

Which is modified form of galvanometer

Question # 25

The unit of magnetic flux is

Question # 26

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

Question # 27

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

Question # 28

The unit of flux density is also given by

Question # 29

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

Question # 30

Method "lamp and scale arrangement" used to measure the

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Strength of magnetic field is measured in SI units, in:
A. N
B. N/Am
C. Am/N
D. Nm/A
2 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
3 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
4 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
5 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
6 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
7

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
8 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
9 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
10 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these

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