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

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

Question # 3

The strength of magnetic field around the current conductor is

Question # 4

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

Question # 5

The magnetic field inside a solenoid can be increased by:

Question # 6

The torque per unit twist of coil is called

Question # 7

The e/m of an electron moving in a circular path in a magnetic field is equal to

Question # 8

The unit of magnetic flux is

Question # 9

CRO deflects the beam of

Question # 10

The CRO deflects the beam of electrons, when they passes through uniform

Question # 11

The unit of flux density is also given by

Question # 12

Ammeter is used to measure

Question # 13

Weber is a unit of

Question # 14

A galvanometer is an instrument used to

Question # 15

Centripetal force for electron is given by

Question # 16

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

Question # 17

Avo-meter is used of measure the

Question # 18

The SI unit of magnetic flux is

Question # 19

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

Question # 20

The SI unit of magnetic induction is tesla which is equal to

Question # 21

The gavanometer constant of a moving coil galvanometer is given by

Question # 22

A relationship between Gauses of magnetic induction and Tesla(T) is given by

Question # 23

The SI unit of magnetic flux is.

Question # 24

The permeability of free space is measured in:

Question # 25

Method "lamp and scale arrangement" used to measure the

Question # 26

The magnetic force exerted on an electron moving with velocity 'v' at right angle to the magnetic field is given by

Question # 27

The magnetic field outside the solenoid due to current is

Question # 28

Current is measured in

Question # 29

The most suitable material for permanent magnet is

Question # 30

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

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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 The sources of magnetic field are
A. isolated magnetic poles
B. charges at rest
C. charges in motion
D. none of these
3 'K' is the proportionality constant of force experienced by conductor. What is the value of 'K' in SI units?
A. 0
B. 1
C. 0.5
D. -1
4 The galvanometer can be made sensitive if the value of the factor C/BAN is
A. constant
B. small
C. large
D. none of these
5 To convert galvanometer into ammeter we connect
A. small resistance in parallel with galvanometer
B. small resistance in series with galvanometer
C. high resistance in series with galvanometer
D. high resistance in parallel with galvanometer
6 The SI unit of magnetic flux is
A. NmA-2
B. NmA-1
C. NAm-1
D. Nm2A-1
7 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
8 When an electron enters in a magnetic field right angle to its motion, the magnitude of its velocity will be
A. changed
B. zero
C. unchanged
D. none of these
9 Lorentz force is defined as
A. q(E + V x B)
B. q(E x B + V)
C. q(E x V + B)
D. q(E x B)
10 Galvanometer is a device used for the detection of
A. voltage
B. current
C. temperature
D. pressure

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