A conductor of length L has current I passing through it when it is placed parallel to a magnetic field. The force experienced by the conductor will be
BLI2
zero
BLI
B2LI
zero
Tesla is a unit of
flux density
field strength
inductance
flux
flux density
A permeable substance is one
which is a strong magnet
which is a bad conductor
which is a good conductor
through which the magnetic lines of force can pass very easily
through which the magnetic lines of force can pass very easily
The materials having low retentivity are suitable for making
weak magnets
permanent magnets
temporary magnets
none of the above
temporary magnets
A magnetic field exists around
moving charges
aluminium
copper
iron
moving charges
The ratio of intensity of magnetisation to the magnetisation force is known as
susceptibility
relative permeability
flux density
none of the above
susceptibility
Magnetising steel is normals difficult because
it has high specific gravity
it has low permeability
it corrodes easily
it has high permeability
it has low permeability
The main constituent of permalloy is
nickel
cobalt
chromium
tungsten
nickel
The use of permanent magnets is. not made in
loud-speakers
energy meters
magnetoes
transformers
transformers
Paramagnetic materials have relative permeability
slightly less than unity
equal to unity
slightly more than unity
equal to that ferromagnetic mate rials
slightly more than unity
पोस्ट अच्छी लगी हो तो प्लीज नीचे दिए गए लिंक पर क्लिक कर शेयर जरुर करें
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