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

The field around a moving charge is called

Question # 2

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

Question # 3

Ammeter is used to measure

Question # 4

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

Question # 5

The current is measured in

Question # 6

The angle of deflection of coil can be measured by the

Question # 7

A voltmeter is used to measure the

Question # 8

A galvanometer is an instrument used to

Question # 9

In the formula B= µ̻ nl, the symbol n denotes:

Question # 10

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 # 11

The voltage increases linearly with

Question # 12

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

Question # 13

The SI unit of flux density is.

Question # 14

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

Question # 15

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

Question # 16

The CRO is used for displaying the waveform of a given

Question # 17

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

Question # 18

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

Question # 19

A full-scale deflection is obtained in a galvanometer with a current of few

Question # 20

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 # 21

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

Question # 22

NmA-1 is commonly called:

Question # 23

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

Question # 24

Magnetic induction is also called as:

Question # 25

The most suitable material for permanent magnet is

Question # 26

The SI unit of magnetic flux is

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
A. 5N
B. 4N
C. 1.5N
D. 6N
2 The working of all DC electric meters (galvanometers, ammetersand voltmeters) depends upon
A. Heating effect of current
B. Chemical effect of current
C. Magnetic effect of current
D. Electromagnetic effect of current
3 The permeability of free space is measured in:
A. Wb/Am
B. Wb A/m
C. Am/Wb
D. m/Web A
4 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
5

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
6 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
7 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
8 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
9 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
10 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge

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