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 SI unit of magnetic permeability is

Question # 2

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

Question # 3

The most suitable material for permanent magnet is

Question # 4

Magnetic flux passing through a element whose vector area makes an angle0º with lines of magnetic force is:

Question # 5

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

Question # 6

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 # 7

The vector representation of force experience give the direction of

Question # 8

The SI unit of magnetic induction is

Question # 9

(CRO) Cathode ray oscilloscope is a device used for high speed

Question # 10

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 # 11

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

Question # 12

The strength of magnetic field around the current conductor is

Question # 13

A beam of electrons is provided by an

Question # 14

Which is modified form of galvanometer

Question # 15

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

Question # 16

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

Question # 17

The unit of magnetic flux is

Question # 18

The sources of magnetic field are

Question # 19

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

Question # 20

For the conversion of galvanometer into voltmeter, we connect a

Question # 21

Magnetic flux and flux density are related by

Question # 22

The magnetic field in the middle of a solenoid due to current is

Question # 23

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

Question # 24

In the formula B= µ̻ nl, the symbol n denotes:

Question # 25

In a moving coil galvanometer, the deflecting couple depends upon

Question # 26

A resistance used in voltmeter is called

Question # 27

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

Question # 28

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

Question # 29

magnetic field is a:

Question # 30

How many number of anodes used in electron gun

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 The field around a moving charge is called
A. magnetic field
B. conservative field
C. non-conservative field
D. none of these
2 Resistance is measured in
A. volts
B. ampere
C. ohm
D. watt
3 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
4 41 The force experience, when proton projected in a magnetic field with velocity 'v' is
A. +e(v x B)
B. -C(V x B)
C. +e2(v x B)
D. -e(v2x B)
5 In a moving coil galvanometer, the deflecting couple depends upon
A. area of the coil
B. number of turns of coil
C. value of magnetic field
D. all of the above
6 A full-scale deflection is obtained in a galvanometer with a current of few
A. ampere
B. volts
C. milliampere
D. ohm
7 The force experienced by charged particle is maximum, if it moves
A. parallel to magnetic field
B. perpendicular to magnetic field
C. opposite to the magnetic field
D. none of these
8 When the charged particle is projected at right angles to the field, then experienced by it will be:
A. Maximum
B. Zero
C. qvB
D. Both (A) and (B)
9 In a straight current carrying conductor, the direction of magnetic field can be found by
A. right hand rule
B. left hand rule
C. head to tall rule
D. none of these
10 The angle of deflection of coil can be measured by the
A. one method
B. three method
C. two method
D. none of these

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