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Electromagnetism
An electromagnet is
permanent
temporary
insulator
conductor
Author:
rikazzz
Comment
Electromagnetism
As per Michael Faraday, if the forefinger points the direction of the magnetic field, the middle finger in the direction of the current, then the thumb would indicate the direction of
force acting on the conductor
magnetic field
electric field
none of above
Author:
rikazzz
Comment
Electromagnetism
The magnetic field produced either by permanent magnets or by an electromagnet called a
magnetic field
field coil
circuit breaker
fuse
Author:
rikazzz
Comment
Electromagnetism
The magnitude of induced Electromotive force (EMF) depends on
speed of motion of coil and magnet only
number of turns of coil only
current passing through coil
speed of motion of coil , magnet and number of turns of coil
Author:
rikazzz
Comment
Electromagnetism
The direction of induced Electromotive force (EMF) in a circuit is under the law of conservation of
mass
charge
energy
momentum
Author:
rikazzz
Comment
Electromagnetism
Transformers are the application of
induction
mutual induction
electrostatics
mutual charges
Author:
rikazzz
Comment
Electromagnetism
The direction of the magnetic field inside the bar magnet is from
north pole to south pole
south pole to north pole
side to side
all of above
Author:
rikazzz
Comment
Electromagnetism
Weak ionic current in our body that travels along the nerve can produce the
atoms
heat
potential difference
magnetic effect
Author:
rikazzz
Comment
Electromagnetism
Through a conductor, an electric current produces a
mechanical energy
magnetism
potential difference
magnetic field
Author:
rikazzz
Comment
Electromagnetism
A simple method of finding the direction of the magnetic field around the conductor is the
Ohm’s law
Joule’s law
left hand grip rule
right hand grip rule
Author:
rikazzz
Comment
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