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

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

Question # 2

The SI unit of magnetic flux is.

Question # 3

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

Question # 4

A resistance used in voltmeter is called

Question # 5

The current is measured in

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

CRO deflects the beam of

Question # 10

The magnetic field outside the solenoid due to current is

Question # 11

How many number of anodes used in electron gun

Question # 12

Current is measured in

Question # 13

F = I(L x B) is a

Question # 14

In a moving coil galvanometer, the deflecting couple depends upon

Question # 15

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 # 16

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

Question # 17

The SI unit of magnetic induction is

Question # 18

The SI unit of flux density is

Question # 19

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

Question # 20

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 21

A galvanometer is an instrument used to

Question # 22

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 # 23

The strength of magnetic field around the current conductor is

Question # 24

Ammeter is used to measure

Question # 25

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 26

Magnetic flux and flux density are related by

Question # 27

In the expression of force experienced by electron, the direction of both v and B are

Question # 28

Amperean path is a:

Question # 29

Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:

Question # 30

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 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
2 The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by
A. F =q(v/B)
B. F=q2(v x B)
C. F=q(v x B)
D. F= vx B
3 The force experienced by an electron projected in a magnetic field B with a velocity V is given by
A. F=e(V x B)
B. F= -e(V x B)
C. F= e(B x V)
D. Both a and c
4 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
5 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
6 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
7 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
8 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
9 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
10 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

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