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 shunt resistance parallel to the galvanometer is used to convert it into

Question # 2

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

Question # 3

NmA-1 is commonly called:

Question # 4

The unit of magnetic flux is

Question # 5

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

Question # 6

The SI unit of magnetic flux is

Question # 7

Ammeter is used to measure

Question # 8

A meter wire carraying a current of 2A is at right angle to the uniform magnetic field of 0.5 Weber/m2The force on the wire is

Question # 9

When some compass needles are placed on a card board along a circle with the center at the wire, they will

Question # 10

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 11

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 # 12

The force experienced by charged particle is maximum, if it moves

Question # 13

The pointer of a magnetic compass:

Question # 14

Lorentz force is defined as

Question # 15

The SI unit of flux density is

Question # 16

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

Question # 17

In the region surrounding a current carrying wire:

Question # 18

In a moving coil galvanometer, the deflecting couple depends upon

Question # 19

The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon

Question # 20

The force acting on a charge moving in a magnetic field

Question # 21

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

Question # 22

The SI unit of magnetic flux is.

Question # 23

A resistance used in galvanometer to make it voltmeter is called

Question # 24

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

Question # 25

Tesla is the unit of

Question # 26

The CRO is used for displaying the waveform of a given

Question # 27

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

Question # 28

Which is modified form of galvanometer

Question # 29

CRO deflects the beam of

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the expression of force experienced by electron, the direction of both v and B are
A. parallel
B. zero
C. perpendicular
D. none of them
2 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
3 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
4 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
5 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
6 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
7 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
8 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
9 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
10 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque

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