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 sources of magnetic field are

Question # 2

Centripetal force for electron is given by

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

F = I(L x B) is a

Question # 7

A resistance used in voltmeter is called

Question # 8

Which one of the following relations is correct?

Question # 9

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

Question # 10

The SI unit of flux density is

Question # 11

The SI unit of magnetic flux is

Question # 12

The pointer of a magnetic compass:

Question # 13

The unit of flux density is also given by

Question # 14

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

Question # 15

The magnetic field inside a solenoid can be increased by:

Question # 16

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

Question # 17

If volume of wire is 'AL' and there are 'n' numbers of charge carriers per unit volume, then the total number of charge carriers are

Question # 18

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

Question # 19

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

Question # 20

Electron gun consist of

Question # 21

The current sensitivity of the galvanometer is

Question # 22

A field is uniform and much stronger:

Question # 23

When the charged particle is projected at right angles to the field, then experienced by it will be:

Question # 24

NmA-1 is commonly called:

Question # 25

The force experienced by an electron projected in a magnetic field B with a velocity V is given by

Question # 26

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

Question # 27

Galvanometer is a device used for the detection of

Question # 28

The magnetic field outside the solenoid due to current is

Question # 29

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

Question # 30

Magnetic flux and flux density are related by

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ECAT Physics Chapter 14 Important MCQ's

Sr.# Question Answer
1 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
2 Method "lamp and scale arrangement" used to measure the
A. angle of deflection
B. restoring torque
C. magnetic field strength
D. current
3 The SI unit of magnetic permeability is
A. WB A-1m-1
B. WB mA-1
C. WB Am-1
D. None of these
4 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
5 The voltage increases linearly with
A. time
B. velocity
C. acceleration
D. torque
6 When charged particle is projected perpendicular to a uniform magnetic field its trajectory is
A. circular
B. elliptical
C. cycloid
D. straight line
7 The SI unit of magnetic induction is
A. Gauses
B. Tesla
C. Weber
D. Weber2
8 F = I(L x B) is a
A. vector
B. scalar
C. unit vector
D. none of these
9 Ammeter is used to measure
A. voltage
B. resistance
C. voltage and current
D. current
10 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

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