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 SI unit of magnetic flux is.

Question # 2

The magnetic field outside the solenoid due to current is

Question # 3

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 4

The CRO is used for displaying the waveform of a given

Question # 5

Flurescent screen is a screen where visible spot

Question # 6

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

Question # 7

To convert galvanometer into ammeter we connect

Question # 8

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

Question # 9

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

Question # 10

The unit of magnetic flux is

Question # 11

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

Question # 12

The SI unit of magnetic flux is

Question # 13

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

Question # 14

Current is measured in

Question # 15

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

Question # 16

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 # 17

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

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

A long wire wound tightly on a cylindrical core is called:

Question # 22

A current carrying conductor sets up its own:

Question # 23

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

Question # 24

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 25

magnetic field is a:

Question # 26

The pointer of a magnetic compass:

Question # 27

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

Question # 28

The unit of flux density is also given by

Question # 29

The most suitable material for permanent magnet is

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 In the region surrounding a current carrying wire:
A. A magnetic field is setup

B.

The lines of force are elliptical

C.

Direction of lines of forces depends upon direction of current

D.

Both (A) and (C)
2 A field is uniform and much stronger:
A.

Inside a long solenoid

B.

Outside a long solenoid

C.

At the end of a long solenoid

D.

At the central point of long solenoid
3 A current carrying conductor is placed at right angle to the magnetic field. The magnetic force experienced by the conductor is
A. minimum
B. maximum
C. zero
D. none of these
4 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
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 When current passes through a solenoid coil, it behaves like a
A. loop
B. circle
C. bar magnet
D. none of these
7 The magnetic field outside the solenoid due to current is
A. strong
B. zero
C. weak
D. uniform
8 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
9 Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:
A. BACosѲ

B. Zero
C. BA
D. BA sinѲ
10 When some compass needles are placed on a card board along a circle with the center at the wire, they will
A.

Point the direction of N-S

B.

Set themselves tangential to the circle

C.

Point in the direction of E-W

D.

None of these

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