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

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

Question # 2

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 3

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

Question # 4

For the conversion of galvanometer into voltmeter, we connect a

Question # 5

The voltage increases linearly with

Question # 6

Galvanometer is a device used for the detection of

Question # 7

Current is measured in

Question # 8

The SI unit of magnetic flux is

Question # 9

When current passes through a solenoid coil, it behaves like a

Question # 10

Method "lamp and scale arrangement" used to measure the

Question # 11

In a moving coil galvanometer, the deflecting couple depends upon

Question # 12

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

Question # 13

In a straight current carrying conductor, the direction of magnetic field can be found by

Question # 14

Amperean path is a:

Question # 15

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 16

The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called

Question # 17

A beam of electrons is provided by an

Question # 18

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

Question # 19

A galvanometer is an instrument used to

Question # 20

The gavanometer constant of a moving coil galvanometer is given by

Question # 21

The current is measured in

Question # 22

The magnetic field inside a solenoid can be increased by:

Question # 23

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

Question # 24

Avo-meter is used of measure the

Question # 25

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

Question # 26

How many number of anodes used in electron gun

Question # 27

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 28

Which one of the following relations is correct?

Question # 29

The SI unit of magnetic induction is

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:
A. Maximum
B. Minimum
C. Zero
D. Very small
2 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
3 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
4 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
5 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
6 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
7 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
8 It is customary represent a current flowing towards the reader by a symbol
A. (x)
B. (+)
C. (.)
D. (-)
9 The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by
A. F=eVB
B. F=e2V/B
C. F=e/VB
D. F=B2/ev
10 The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by
A. F=IB/L
B. F= L x B/I
C. F = IL x B
D. F = IL . B

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