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

How many number of anodes used in electron gun

Question # 2

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 3

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

Question # 4

A field is uniform and much stronger:

Question # 5

Tesla is the unit of

Question # 6

The SI unit of flux density is

Question # 7

The CRO is used for displaying the waveform of a given

Question # 8

A galvanometer is an instrument used to

Question # 9

The unit of flux density is also given by

Question # 10

A resistance used in galvanometer to make it voltmeter is called

Question # 11

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

Question # 12

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

Question # 13

The SI unit of flux density is.

Question # 14

A solenoid is a coil of wire which is:

Question # 15

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

Question # 16

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

Question # 17

magnetic field is a:

Question # 18

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

Question # 19

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

Question # 20

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 21

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

Question # 22

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

Question # 23

Resistance is measured in

Question # 24

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 # 25

The torque per unit twist of coil is called

Question # 26

Electron gun consist of

Question # 27

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 # 28

A resistance used in voltmeter is called

Question # 29

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

Question # 30

The sources of magnetic field are

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
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 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
4 For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as
A. modification
B. voltage
C. current
D. resistance
5 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
6 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
7 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
8 A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called
A. dead beat galvanometer
B. stable galvanometer
C. shunt galvanometer
D. sensitive galvanomter
9 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
10 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N

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