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

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:

Question # 2

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

Question # 3

For the conversion of galvanometer into voltmeter, we connect a

Question # 4

magnetic field is a:

Question # 5

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

Question # 6

Magnetic induction is also called as:

Question # 7

The SI unit of flux density is.

Question # 8

The magnetic field in the middle of a solenoid due to current is

Question # 9

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

Question # 10

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

Question # 11

The unit of magnetic flux is

Question # 12

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

Question # 13

A field is uniform and much stronger:

Question # 14

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

Question # 15

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
2 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
3 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
4 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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth
5 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
6 The magnetic field in the middle of a solenoid due to current is
A. weak
B. strong and uniform
C. none-uniform
D. zero
7 if the field is directed along the normal to the area, then flux is:
A.

Maximum

B.

Equal to zero

C.

Equal to BA

D.

Minimum
8 The unit of flux density is also given by
A. Weber/m2or Wb . m-2
B. Weber/mor Wb . m
C. Weber/mor Wb . m-1
D. Weber or Wb
9 The working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
10 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

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