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

Weber is a unit of

Question # 3

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

Question # 4

Method "lamp and scale arrangement" used to measure the

Question # 5

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 6

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

Question # 7

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

Question # 8

The current is measured in

Question # 9

The permeability of free space is measured in:

Question # 10

Electron gun consist of

Question # 11

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 # 12

The SI unit of magnetic flux is.

Question # 13

A voltmeter is used to measure the

Question # 14

The direction of lines of force depends upon the direction of

Question # 15

Galvanometer is a device used for the detection of

Question # 16

The SI unit of flux density is.

Question # 17

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 18

The strength of magnetic field around the current conductor is

Question # 19

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 20

To convert galvanometer into ammeter we connect

Question # 21

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

Question # 22

A solenoid is a coil of wire which is:

Question # 23

Avo-meter is used of measure the

Question # 24

For the conversion of galvanometer into voltmeter, we connect a

Question # 25

Strength of magnetic field is measured in SI units, in:

Question # 26

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

Question # 27

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

Question # 28

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 29

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

Question # 30

A resistance used in galvanometer to make it voltmeter is called

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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 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
3 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
4 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
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 Which one of the following relations is correct?
A. 1 Wb-m2= Nm-1A-1
B. 1 tesla = 104 gausses
C. 1 Wb-m2= 1 tesla
D. All of the above
7 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
8 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
9 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
10 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

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