ECAT Pre Computer Science Chapter 14 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

Try The MCQ's Test For ECAT Physics Chapter 14 Electromagnetism

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ECAT Physics Chapter 14 Electromagnetism

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Question # 1

magnetic field is a:

Question # 2

The unit of flux density is also given by

Question # 3

Electron gun consist of

Question # 4

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 5

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

Question # 6

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

Question # 7

In the region surrounding a current carrying wire:

Question # 8

The CRO deflects the beam of electrons, when they passes through uniform

Question # 9

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

Question # 10

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

Question # 11

A voltmeter is used to measure the

Question # 12

The SI unit of flux density is.

Question # 13

A resistance used in voltmeter is called

Question # 14

A resistance used in galvanometer to make it voltmeter is called

Question # 15

For the conversion of galvanometer into voltmeter, we connect a

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The vector representation of force experience give the direction of
A. magnetic field
B. current
C. length of conductor
D. force
2 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
3 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
4 The current is measured in
A. volts
B. watt
C. ampere
D. ohm
5 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
6 How many number of anodes used in electron gun
A. one
B. two
C. three
D. six
7 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
8 A voltmeter is used to measure the
A. potential difference
B. current
C. temperature
D. resistance
9 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
10 Total number of turns on 0.15 m length solenoid is 300. the value of n is:
A. Greater than 300
B. Smaller than 300
C. Equal to 300
D. Any of (A) or (B)

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