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

Current is measured in

Question # 2

In a moving coil galvanometer, the deflecting couple depends upon

Question # 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:

Question # 4

The CRO is used for displaying the waveform of a given

Question # 5

The SI unit of flux density is

Question # 6

The SI unit of magnetic flux is

Question # 7

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

Question # 8

Magnetic lines of force:

Question # 9

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

Question # 10

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

Question # 11

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

Question # 12

Which is modified form of galvanometer

Question # 13

The SI unit of magnetic induction is

Question # 14

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

Question # 15

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

Question # 16

A voltmeter is used to measure the

Question # 17

A resistance used in voltmeter is called

Question # 18

magnetic field is a:

Question # 19

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

Question # 20

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

Question # 21

The unit of magnetic flux is

Question # 22

Weber is a unit of

Question # 23

The SI unit of magnetic flux is.

Question # 24

Magnetic induction is also called as:

Question # 25

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 # 26

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

Question # 27

Magnetic flux and flux density are related by

Question # 28

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

Question # 29

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

Question # 30

The force acting on a charge moving in a magnetic field

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
2 The magnetic field inside a solenoid can be increased by:
A. Increasing n
B. Decreasing I
C. Increasing I
D. By using iron core within solenoid
3 The SI unit of flux density is
A. Newton/Amp-meter
B. Newton-m/Ampere
C. Newton-m/Amp2
D. Newton-Amp/meter
4 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
5 In the formula B= µ̻ nl, the symbol n denotes:
A.

Total number of turns of solenoid

B.

Number of turns per unit length

C.

Number of turns per unit volume

D.

Numbers of turns per unit area
6 The most suitable material for permanent magnet is
A. cobalt
B. iron
C. steel
D. alaminium
7 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
8 Charge to mass ratio (e/m) of an electron is given by the relation
A. e/m = 2V/Br2
B. e/m = 2V/B2r
C. e/m = 2V/B2r2
D. e/m = V/2B2r2
9 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
10 CRO deflects the beam of
A. proton
B. a-particle
C. electron
D. neutron

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