Deep CLASSES
1. electromagnet
2. iron material
3. electromagnetism
4. magnetic lines of force
5. periodically
6. electric circuits
7. no
8. magnetic field lines
9. mutually
10. DC motor
11. galvanometer
12. constant
13. electric energy
14. carbon
15. electric fuse
16. short circuiting
17. perpendicular
18. direction
19. armature coil
20. tangent
21. crowded, far
22. magnetic field
23. Oersted
24. electromagnetism
25. bar magnet
26. north pole/north seeking pole
27. south
28. rheostat
29. directly
30. decreases
31. current, magnetic field
32. n times
33. cylinder
34. bar magnet
35. magnetise
36. Permanent
37. nickel, aluminium , titanium
38. aluminium, nickel, cobalt
39. motion
40. Ampere
41. displacement
42. Current
43. accelerate
44. magnetic field
45. Ion current
46. heart, brain
47. muscles
48. Magnetic Resonance Imaging
49. disorders
50. electrical energy, mechanical energy
51. conductor
52. Spilt ring commutator
53. Commutator
54. magnetic levitation
55. electrical energy
56. electric current
57. current
58. Faraday
59. zero
60. 50Hz
61. periodically
62. household
63. Electric power
64. 1821
65. 1831
66. electromagnetic induction
67. zero
68. alternating
69. Overloading
70. overloading
71. overloading
72. burning
73. severe
74. earthed
75. copper plate
76. resistance
77. underground cables
78. live wire
79. 220-250V
80. domestic
1.
The
magnet in which magnetism is induced in the disc with help of electricity is
called as _________________.
2.
Electromagnet
is used in loading and transporting scrap and loose ________________________ in
a steel mill.
3.
Antenna
work on the principle of ________________________.
4.
The
path along which the unit north pole moves in a magnetic field is called as
____________________________.
5.
The
insulation of wire must be checked ________________________.
6.
___________________________should
be switched off during lightning.
7.
____two
magnetic lines of force can intersect each other.
8.
The
magnetic lines of forces is also called as ___________________________________.
9.
In
Fleming’s left hand rule, forefinger, the central finger and thumb of your left
hand are _________________perpendicular
to each other.
10.
Electric
cranes work on the device _____________.
11.
A
_____________________ is an instrument which is used to detect the presence of
current in circuit.
12.
In
direct current, the magnitude and direction of current is ______________.
13.
A
generator which converts mechanical energy into ___________________ in the form
of alternating current is called as AC generator.
14.
The
output in DC generator is showing by glowing bulb connected cross the
___________brushes.
15.
An
__________________ is a safety device used to save the electrical appliances.
16.
If
a live wire and a neutral wire come in direct contact or touch each other,
___________________takes place.
17.
In Fleming’s
right hand rule, the thumb,
forefinger and middle finger are ___________________to each other.
18.
In
Fleming’s right hand rule, the induced current is found to be maximum when the
_____________of motion of coil is at right angles to magnetic field.
19.
In
electric motor the battery supplies the current to the _______________________.
20.
The
___________at any point on the magnetic lines of force gives the direction of
the magnetic field at that point.
21.
Magnetic
lines of force are ______________where the magnetic field is strong and
_________from each other where the field is weak.
22.
If
current is passed through a wire, ________________is produced near it.
23.
Scientist
________________shoed that electricity and magnetism are related phenomena.
24.
When
a strong electric current is passes through a wire, then electric current produces
______________________.
25.
A
compass needle is a small _________________.
26.
The
end of the magnet which points towards north is called as __________________.
27.
The
end which points towards _____________is called as south seeking pole.
28.
The
variable resistance is called as ___________.
29.
The
magnitude of the field produced at a given point is _________ proportional to
the magnitude of the current passing in the wire.
30.
The
magnetic field produced by a given current in the wire ___________as the
distance from the wire increases.
31.
In
Right hand thumb rule, thumb points towards the direction of __________, then
the curled fingers around the conductor will give the direction of
____________________________.
32.
Thus
if coil has ‘n’ turns, the field produced is __________ larger than that
produced by a single turn.
33.
A
coil of many turns of insulated copper
wire in the shape of __________ is called as solenoid.
34.
The
solenoid has all the properties of the field produced by a _________________.
35.
With
the help of solenoid we can ________________ a piece of rod of a given
material.
36.
_______________magnets
are usually made up of carbon steel, chromium steel, cobalt and tungsten steel
and some alloys.
37.
Nipermag
is an alloy of iron, _____________, ______________ and ________________.
38.
Alnico
is an ___________________________________alloy.
39.
There
is relationship between the direction of the current, the field and the
__________of the conductor.
40.
Scientist
________ suggested that the magnet must also exert an equal and opposite force
on the current carrying conductor.
41.
The
______________of rod is maximum when the direction of the current is at right
angles to the direction of magnetic field.
42.
_____________
is a flow of charge.
43.
The
moving charges in magnetic field would experience a force which is used to
_____________ charged particles to very high energies.
44.
Electric
current produces ______________________, even if the current is very weak.
45.
_____________________which
travels along the nerve cells in our body provides magnetic fields.
46.
_________and
__________ are the 2 main organs where significant magnetic fields can be
produced.
47.
If
we touch something, our nerves carry an electrical impulse to the __________we
need to use.
48.
The full form of MRI is
______________________________________________.
49.
Analysis
of images brain and heart using MRI technique help doctors to diagnose
_______________of the brain.
50.
A
device which _______________________ into __________________________ is called
an electric motor.
51.
Electric
motor works on the principle that a current carrying ______________placed in a
magnetic field experiences a force.
52.
___________________________________
consists of two halves of a metallic ring.
53.
_______________
reverses the direction of current in armature coil.
54.
_____________________________trains
do not run on rails but float above them.
55.
The
coil in the electric motor rotates with the help of _______________________.
56.
If
a conductor is moving inside a magnetic field or magnetic field is changing
around a fixed conductor, ______________________is generated.
57.
The
process by which a changing magnetic field in a conductor induces a _________in
another current is called as electromagnetic
induction.
58.
Electromagnetic
induction was first studied by scientist ____________.
59.
The
frequency of direct current is
____________.
60.
The
frequency of AC current is _______in India.
61.
An
alternating current reverses its current ____________________.
62.
The
alternating current is used in electrical ____________appliances such as
electric heater, refrigerator, iron, etc.
63.
________________________can
be transmitted over long distances without loss of energy in alternating
current.
64.
Faraday
in _________, found that electricity could rotary motion.
65.
In
_______, Faraday showed that relative movement between a magnet and a coil of
wire could induce electricity in coil, an idea which gave birth to modern
generators.
66.
Electric
generator works on the principle of __________________________________.
67.
If
the current in a circuit is zero, the galvanometer will show ______ deflection
or no deflection.
68.
If
the induced current produced is of ______________nature then such a current is
called as alternating nature.
69.
____________________means
the flow of large amount of current in the circuit beyond the permissible value
of current.
70.
If
many appliances of high power rating are switched on simultaneously, _____________occurs which causes fire.
71.
__________________can
be avoided by connecting few appliances at a time in the circuit.
72.
Switching off the electrical circuits during
lightning will save the electrical
appliances from__________________.
73.
If
we touch the metallic body of the appliance which is in contact with live wire,
we may receive _________ shock.
74.
To
avoid such accidents, metal castings of all electrical appliances must be
______________.
75.
The
system of connecting the metal casing of
an electrical appliance with a __________ buried deep inside the earth is
called as earthing.
76.
During
a short circuit, the ______________ of the circuit becomes very small and huge
amount of current flows through it.
77.
The
state electricity board provides us electric power supply for houses and
factories is supplied through ______________________ or overhead wires.
78.
The
phase wire is also called as ____________________________.
79.
The
potential difference between live wire and neutral wire is ___________.
80.
The
output electric power from the main switch is distributed to
____________________ electric circuit.
1. electromagnet
2. iron material
3. electromagnetism
4. magnetic lines of force
5. periodically
6. electric circuits
7. no
8. magnetic field lines
9. mutually
10. DC motor
11. galvanometer
12. constant
13. electric energy
14. carbon
15. electric fuse
16. short circuiting
17. perpendicular
18. direction
19. armature coil
20. tangent
21. crowded, far
22. magnetic field
23. Oersted
24. electromagnetism
25. bar magnet
26. north pole/north seeking pole
27. south
28. rheostat
29. directly
30. decreases
31. current, magnetic field
32. n times
33. cylinder
34. bar magnet
35. magnetise
36. Permanent
37. nickel, aluminium , titanium
38. aluminium, nickel, cobalt
39. motion
40. Ampere
41. displacement
42. Current
43. accelerate
44. magnetic field
45. Ion current
46. heart, brain
47. muscles
48. Magnetic Resonance Imaging
49. disorders
50. electrical energy, mechanical energy
51. conductor
52. Spilt ring commutator
53. Commutator
54. magnetic levitation
55. electrical energy
56. electric current
57. current
58. Faraday
59. zero
60. 50Hz
61. periodically
62. household
63. Electric power
64. 1821
65. 1831
66. electromagnetic induction
67. zero
68. alternating
69. Overloading
70. overloading
71. overloading
72. burning
73. severe
74. earthed
75. copper plate
76. resistance
77. underground cables
78. live wire
79. 220-250V
80. domestic
