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 long wire wound tightly on a cylindrical core is called:

Question # 2

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 3

Electron gun consist of

Question # 4

The field around a moving charge is called

Question # 5

A beam of electrons is provided by an

Question # 6

Magnetic induction is also called as:

Question # 7

The SI unit of magnetic induction is

Question # 8

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 # 9

The torque per unit twist of coil is called

Question # 10

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

Question # 11

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

Question # 12

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

Question # 13

Avo-meter is used of measure the

Question # 14

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

Question # 15

It is customary represent a current flowing towards the reader by a symbol

Question # 16

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

Question # 17

In a moving coil galvanometer, the deflecting couple depends upon

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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 # 22

The SI unit of magnetic flux is.

Question # 23

The unit of magnetic flux is

Question # 24

The permeability of free space is measured in:

Question # 25

Magnetic lines of force:

Question # 26

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

Question # 27

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

Question # 28

The most suitable material for permanent magnet is

Question # 29

The magnetic field outside the solenoid due to current is

Question # 30

Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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
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 Electron gun consist of
A. three anodes
B. heating cathode
C. three anodes
D. three anodes , heating cathode, grid
5

Amperean path is a:
A.

Closed path

B.

Rectangular path

C.

Circular path

D.

Any of above
6 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
7 Hold the solenoid in the right hand with fingers curling in the direction of current. The direction of the field will be given by:
A.

Thumb

B.

Curled fingers

C.

Middle finger

D.

Arm of right hand
8 When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is
A. 90°
B. 75°
C. 0°
D. 180°
9 NmA-1 is commonly called:
A. Weber
B. Apmere
C. Guass
D. Coulomb
10 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force

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