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

Question # 2

When a suitable small resistance is put in parallel with the galvanometer coil, it is converted into

Question # 3

Charge to mass ratio (e/m) of an electron is given by the relation

Question # 4

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

Question # 5

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

Question # 6

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

Question # 7

Which one of the following relations is correct?

Question # 8

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

Question # 9

Amperean path is a:

Question # 10

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

Question # 11

Magnetic flux passing through the an element of are A placed perpendicular to a uniform magnetic field Bis:

Question # 12

The SI unit of magnetic flux is.

Question # 13

The SI unit of flux density is

Question # 14

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

Question # 15

In a moving coil galvanometer, the deflecting couple depends upon

Question # 16

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

Question # 17

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 # 18

A resistance used in galvanometer to make it voltmeter is called

Question # 19

The current sensitivity of the galvanometer is

Question # 20

A resistance used in voltmeter is called

Question # 21

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

Question # 22

A field is uniform and much stronger:

Question # 23

magnetic field is a:

Question # 24

Lorentz force is defined as

Question # 25

For the conversion of galvanometer into voltmeter, we connect a

Question # 26

The magnetic field outside the solenoid due to current is

Question # 27

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

Question # 28

The most suitable material for permanent magnet is

Question # 29

When the waveform of one voltage is increasing and that of second is decreasing and vice versa, then phase difference between these voltage is

Question # 30

The current in microamperes required to produce one millimeter deflection on a scale placed one meter away from the mirror of the galvanometer, defined the sensitivity of

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
3 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
4 Magnetic flux and flux density are related by
A. Flux density = flux x area
B. Flux density = flux / area
C. Flux density = flux - area
D. None of these
5 A relationship between Gauses of magnetic induction and Tesla(T) is given by
A. G 10-3T
B. G = 10-2T
C. G = 10-4T
D. G = 10-1T
6 In order to make a voltmeter, high resistance is connected with galvanometer, in
A. perpendicular
B. may be paralled or pendicular
C. series
D. none of these
7 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
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 unit of magnetic flux is
A. Weber-m2
B. Weber-m3
C. Henry
D. Weber
10 A charged particle moving at right angle to the magnetic field will experience
A. minimum force
B. maximum force
C. zero
D. moderate force

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