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 flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 2

The vector representation of force experience give the direction of

Question # 3

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

Question # 4

A galvanometer is an instrument used to

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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 # 9

NmA-1 is commonly called:

Question # 10

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

Question # 11

If the number of turns of a solenoid (carrying a steady current I) is doubled without changing the length of a solenoid, then magnetic field:

Question # 12

Avo-meter is used of measure the

Question # 13

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

Question # 14

A field is uniform and much stronger:

Question # 15

The unit of magnetic flux is

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
2 The direction of lines of force depends upon the direction of
A. voltage
B. current
C. charges
D. none of these
3 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
4 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
5 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
6 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
7 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
8 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
9 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
10 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°

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