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

F = I(L x B) is a

Question # 2

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

Question # 3

Avo-meter is used of measure the

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

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

Question # 9

The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed

Question # 10

Method "lamp and scale arrangement" used to measure the

Question # 11

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

Question # 12

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

Question # 13

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

Question # 14

How many number of anodes used in electron gun

Question # 15

The pointer of a magnetic compass:

Question # 16

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 # 17

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

Question # 18

The CRO is used for displaying the waveform of a given

Question # 19

Centripetal force for electron is given by

Question # 20

The SI unit of magnetic flux is.

Question # 21

A galvanometer is an instrument used to

Question # 22

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

Question # 23

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

Question # 24

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

Question # 25

The torque per unit twist of coil is called

Question # 26

The angle of deflection of coil can be measured by the

Question # 27

Tesla is the unit of

Question # 28

In a moving coil galvanometer, the deflecting couple depends upon

Question # 29

In order to make a voltmeter, high resistance is connected with galvanometer, in

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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°
2 The force acting on a charge moving in a magnetic field
A. is perpendicular to the both magnetic field and direction of motion
B. is proportional to the magnetic of charges
C. vanishes when the motion is directly opposite to the direction of field
D. all of the above
3 If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made
A. Sensitive
B. Accurate
C. Stable
D. None of these
4 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
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 working of galvanometer depends upon torque exerted on a current carrying coil in
A. magnetic field
B. electric field
C. gravitational field
D. nuclear field
7 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these
8 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
9 The CRO deflects the beam of electrons, when they passes through uniform
A. electric field
B. gravitational field
C. magnetic flax
D. magnetic field
10 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

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