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

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

Question # 2

A field is uniform and much stronger:

Question # 3

Galvanometer is a device used for the detection of

Question # 4

Electron gun consist of

Question # 5

Which one of the following relations is correct?

Question # 6

A solenoid is a coil of wire which is:

Question # 7

How many number of anodes used in electron gun

Question # 8

The strength of magnetic field around the current conductor is

Question # 9

41 The force experience, when proton projected in a magnetic field with velocity 'v' is

Question # 10

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

Question # 11

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

Question # 12

A shunt resistance parallel to the galvanometer is used to convert it into

Question # 13

Weber is a unit of

Question # 14

The gavanometer constant of a moving coil galvanometer is given by

Question # 15

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

Question # 16

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 # 17

The SI unit of magnetic flux is.

Question # 18

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

Question # 19

Which is modified form of galvanometer

Question # 20

A beam of electrons is provided by an

Question # 21

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

Question # 22

The unit of flux density is also given by

Question # 23

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

Question # 24

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

Question # 25

The SI unit of flux density is.

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 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°
3 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
4 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
5 The torque per unit twist of coil is called
A. proportionality constant
B. gravitational constant
C. boltzman constant
D. coupling constant
6 Magnetic lines of force:
A.

Cannot intersect at all

B.

Intersect at infinity

C.

Intersect within magnet

D.

Intersect at Neutral Point
7 The CRO is used for displaying the waveform of a given
A. current
B. voltage
C. both of them
D. none of them
8 The gavanometer constant of a moving coil galvanometer is given by
A. K=BAN/C
B. K=BN/CA
C. K=NAC/B
D. K=C/BAN
9 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
10 The unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber

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