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

Question # 2

The sources of magnetic field are

Question # 3

Current is measured in

Question # 4

magnetic field is a:

Question # 5

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

Question # 6

CRO deflects the beam of

Question # 7

The SI unit of flux density is.

Question # 8

In a moving coil galvanometer, the deflecting couple depends upon

Question # 9

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

Question # 10

The force acting on a charge moving in a magnetic field

Question # 11

The SI unit of magnetic permeability is

Question # 12

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 13

NmA-1 is commonly called:

Question # 14

Amperean path is a:

Question # 15

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 # 16

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

Question # 17

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

Question # 18

Resistance is measured in

Question # 19

The unit of magnetic flux is

Question # 20

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

Question # 21

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

Question # 22

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 23

Magnetic lines of force:

Question # 24

The torque per unit twist of coil is called

Question # 25

Electron gun consist of

Question # 26

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

Question # 27

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

Question # 28

The magnetic field inside a solenoid can be increased by:

Question # 29

The SI unit of magnetic induction is

Question # 30

How many number of anodes used in electron gun

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
2 (CRO) Cathode ray oscilloscope is a device used for high speed
A. velocity
B. graph plotting
C. time-velocity
D. none of these
3 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
4 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)
5 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance
6 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
7 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
8 The e/m of an electron moving in a circular path in a magnetic field is equal to
A. V/Br
B. V/B2r2
C. V2/Br2
D. V2/Br
9 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
A. ammeter
B. voltmeter
C. galvanometer
D. avo-meter
10 At a given instant, a photon moves in +x direction in a region where there magnetic field in -z direction. The magnetic force on the proton will be the:
A. -y direction
B. +y direction
C. +z direction
D. -z direction

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