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

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

Question # 2

A current carrying conductor sets up its own:

Question # 3

The vector representation of force experience give the direction of

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

The magnetic field outside the solenoid due to current is

Question # 9

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

Question # 10

To convert galvanometer into ammeter we connect

Question # 11

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 12

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

Question # 13

magnetic field is a:

Question # 14

The SI unit of magnetic permeability is

Question # 15

Electron gun consist of

Question # 16

Magnetic lines of force:

Question # 17

A galvanometer in which the coil comes to rest quickly after the current passed through it, or the current stopped form flowing through it, is called

Question # 18

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

Question # 19

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

Question # 20

The direction of lines of force depends upon the direction of

Question # 21

When current passes through a solenoid coil, it behaves like a

Question # 22

Which is modified form of galvanometer

Question # 23

The voltage increases linearly with

Question # 24

For measuring large currents, an ordinary galvanometer cannot be used without proper, then both relates with each other as

Question # 25

The current sensitivity of the galvanometer is

Question # 26

Tesla is the unit of

Question # 27

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

Question # 28

if the field is directed along the normal to the area, then flux is:

Question # 29

Which one of the following relations is correct?

Question # 30

Amperean path is a:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure
2

The pointer of a magnetic compass:
A.

Is affected only by permanent magnets

B.

Align itself parallel to the applied magnetic field

C.

Vibrates in the magnetic field of the current

D.

Aligns itself perpendicular to the magnetic field
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 A solenoid is a coil of wire which is:
A.

Short, loosely wound, cylindrical

B.

Long, tightly wound, spherical

C.

Long, loosely wound, cylindrical

D.

Long, tightly wound, cylindrical
5 A long wire wound tightly on a cylindrical core is called:
A. Potentiometer
B. Solenoid
C. Toroid
D. Wheat and stone bridge
6 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
7 Centripetal force for electron is given by
A. mv2/ r
B. mv / r2
C. mv2/ r
D. mr2/ v
8 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
9 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
10 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:
A. Becomes Half
B. Becomes double
C. Is not affected
D. Becomes one fourth

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