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

NmA-1 is commonly called:

Question # 2

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

Question # 3

A field is uniform and much stronger:

Question # 4

The SI unit of magnetic induction is tesla which is equal to

Question # 5

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 # 6

To convert galvanometer into ammeter we connect

Question # 7

The field around a moving charge is called

Question # 8

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 9

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 10

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 11

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

Question # 12

Tesla is the unit of

Question # 13

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 14

Electron gun consist of

Question # 15

Amperean path is a:

Question # 16

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

Question # 17

The most suitable material for permanent magnet is

Question # 18

The direction of lines of force depends upon the direction of

Question # 19

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

Question # 20

A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is

Question # 21

Strength of magnetic field is measured in SI units, in:

Question # 22

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 # 23

The torque per unit twist of coil is called

Question # 24

Weber is a unit of

Question # 25

The unit of flux density is also given by

Question # 26

When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be

Question # 27

Lorentz force is defined as

Question # 28

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 29

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 30

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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
3 If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are
A. n/AL
B. Al/n
C. nAL
D. nA/L
4 A beam of electrons is provided by an
A. electron gun
B. Suppray
C. Injection
D. None of these
5 The strength of magnetic field around the current conductor is
A. Smaller near the conductor
B. Greater near the conductor
C. Greater at the large distance from the conductor
D. Constant near and away from the conductor
6 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
7 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
8 The current sensitivity of the galvanometer is
A. C/BAN
B. BAN/C
C. CAN/B
D. CBN/A
9 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
10 The total number of lines of magnetic induction pasing through a surface perpendicular to the magnetic field is called
A. magnetic flux
B. magnetic flux density
C. magnetic induction
D. magnetic field intensity

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