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

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

Question # 2

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 # 3

Magnetic induction is also called as:

Question # 4

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

Question # 5

Ammeter is used to measure

Question # 6

The angle of deflection of coil can be measured by the

Question # 7

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

Question # 8

Electron gun consist of

Question # 9

Centripetal force for electron is given by

Question # 10

Strength of magnetic field is measured in SI units, in:

Question # 11

The vector representation of force experience give the direction of

Question # 12

The SI unit of flux density is

Question # 13

The working of galvanometer depends upon torque exerted on a current carrying coil in

Question # 14

Which one of the following relations is correct?

Question # 15

The galvanometer can be made sensitive if the value of the factor C/BAN is

Question # 16

The force exerted on a conductor of length L, carrying current I when placed in a magnetic field B is given by

Question # 17

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

Question # 18

The direction of lines of force depends upon the direction of

Question # 19

Galvanometer is a device used for the detection of

Question # 20

The CRO is used for displaying the waveform of a given

Question # 21

The torque per unit twist of coil is called

Question # 22

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

Question # 23

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 # 24

A voltmeter is used to measure the

Question # 25

To convert galvanometer into ammeter we connect

Question # 26

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

Question # 27

The force acting on a charge moving in a magnetic field

Question # 28

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

Question # 29

magnetic field is a:

Question # 30

Magnetic lines of force:

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 Flurescent screen is a screen where visible spot
A. vanishes
B. is made
C. becomes small and large
D. none of these
2 Weber is a unit of
A. magnetic flux
B. magnetic filed intensity
C. magnetic induction
D. magnetic flux density
3 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
4 Tesla is the unit of
A. Magnetic induction or flux density
B. Magnetic flux
C. Self inductance
D. None of these
5 For the conversion of galvanometer into voltmeter, we connect a
A. small resistance in series with galvanometer
B. small resistance in parallel with galvanometer
C. high resistance in parallel with galvanometer
D. high resistance series with galvanometer
6 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
7 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
8 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
9 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force
10 The straight current carrying conductor experiences maximum force in a uniform magnetic field when it is placed
A. parallel to the field
B. Perpendicular to the field
C. At an angle of 45 to the field
D. None of the above

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