Answer / nilkanth tailor

Generally, when the current passing through the conductor,
electrons ( charge partical) starts to travel in uniform
motions...and this motion contains two types of motion...1)
linear motion..2)spin motion
linear motion is responsible for electric current
spin motion is responsible for magnetic field (a rotating
electrically charged body creates a magnetic dipole with
magnetic poles of equal magnitude but opposite polarity)

Answer / s.geeta sri

A current carrying conductor, such as a metal wire, will
produce a magnetic field around it because of the motion of
charge within the wire itself. This motion produces or sets
up a magnetic field around the wire in the form of
concentric circles.

This electromagnetic effect is described in physics by the
Biot-Savart Law, an experimentally deduced inverse-square
law. The effect is also described by Ampère's Law, which is
derived from the Biot-Savart Law. This law relates magnetic
field and current.

Also, a magnetic field that is set up by an electrical
current will produce a magnetic force. This force depends
on the rate of charge transfer and the magnetic field.

The force produced by a current-carrying wire depends on
the length, the magnetic field, and the current, which is
the charge flow per unit of time.

For Synchronisation of DG Sets Sometimes we people use NIC (Neutral Isolation Contactor) Instead of 4-pole ACB or any switchgerar..Please guide me why is it so????

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5 Answers   Jindal,

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