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

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

Question # 2

The SI unit of magnetic flux is

Question # 3

Method "lamp and scale arrangement" used to measure the

Question # 4

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

Question # 5

The force acting as one meter length of the conductor placed at right angle to the magnetic field, when one A current is passing through it, defines the

Question # 6

The gavanometer constant of a moving coil galvanometer is given by

Question # 7

The sources of magnetic field are

Question # 8

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

Question # 9

A resistance used in galvanometer to make it voltmeter is called

Question # 10

Total number of turns on 0.15 m length solenoid is 300. the value of n is:

Question # 11

Centripetal force for electron is given by

Question # 12

The force experienced by a single charge carrier moving with velocity 'v' i magnetic field of strength 'B' is given by

Question # 13

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

Question # 14

The SI unit of flux density is.

Question # 15

How many number of anodes used in electron gun

Question # 16

The torque per unit twist of coil is called

Question # 17

If the value of galvanometer constant k = C/BAN is made small, the galvanometer can be made

Question # 18

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

Question # 19

Electron gun consist of

Question # 20

The voltage increases linearly with

Question # 21

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

Question # 22

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

Question # 23

A field is uniform and much stronger:

Question # 24

The SI unit of magnetic permeability is

Question # 25

The direction of lines of force depends upon the direction of

Question # 26

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

Question # 27

In a moving coil galvanometer, the deflecting couple depends upon

Question # 28

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

Question # 29

Amperean path is a:

Question # 30

Magnetic induction is also called as:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 A magnetic force on an electron travelling with 108ms-1parallel to a field of strength 1 Wb m-2is
A. Zero
B. 105 m
C. 10-10N
D. 108N
2 Gauss(G) is smaller unit of magnetic induction which is related to tesla(T) as
A. IT = 10-4 G
B. IT = 105G
C. IT = 103G
D. IT = 104G
3 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
4 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
5 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)
6 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
7 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
8 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
9 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
A. F = B2
B. F = 0
C. F = B
D. F = B/2
10 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these

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