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

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

Question # 2

The torque per unit twist of coil is called

Question # 3

The unit of flux density is also given by

Question # 4

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

Question # 5

For the conversion of galvanometer into voltmeter, we connect a

Question # 6

A voltmeter is used to measure the

Question # 7

CRO deflects the beam of

Question # 8

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

Question # 9

if the field is directed along the normal to the area, then flux is:

Question # 10

Magnetic lines of force:

Question # 11

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

Question # 12

Avo-meter is used of measure the

Question # 13

Flurescent screen is a screen where visible spot

Question # 14

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

Question # 15

The force acting on a charge moving in a magnetic field

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
3 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)
4 Current is measured in
A. volts
B. watt
C. ohm
D. ampere
5 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
6 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
7 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above
8 Avo-meter is used of measure the
A. current, voltage
B. voltage, resistance
C. resistance, current
D. current, voltage and resistance
9 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
10 A resistance used in voltmeter is called
A. shunt resistance
B. high resistance
C. low resistance
D. zero resistance

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