Recent content by rohitchaky

Yes I do know the dipole concept of permanent magnets and the concept of the unpaired electron spin that produces magnetism. Stretch how? Can you show me a picture?

A permanent magnet will have a unique north and south pole. Hence my question :) but I guess generating such a field will not be possible. What do you think?

Yes I did look at maglev and other applications utilizing levitation but these systems are made stable by an external force. The wire is stable without the application of an external force. I am trying to see if a permanent magnet can generate a field similar to the field generated by a straight...

The compass would point in the direction depending on its location and the direction of current. But as I were to move the compass around the wire in a circular manner, the direction of the north pole will also change. So I never find a unique north pole. The background for this question is...

I have two questions 1. The magnetic field around a straight conductor carrying current forms concentric circles around the magnet. Where are the north and south poles of this magnetic field? 2. Can a permanent magnet be made to generate a magnetic field similar to that of a wire carrying...

thanks MisterX and sophiecentaur

So since this is an uncoupled inductor, current lags correct? Thanks for the info regarding relationship between flux and current.

Yes I was confusing myself with the two. But even in this case, until the direction of current changes, isn't there a -ve power?

Work function of metals: http://hyperphysics.phy-astr.gsu.edu/hbase/tables/photoelec.html#c1 Copper work function - 4.7 eV Silver work function - 4.73 eV Silicon work function - 4.26 eV (http://environmentalchemistry.com/yogi/periodic/Ag.html) The work functions of conductors are...

Consider the following system - A coil is wrapped around a soft iron core as shown below. A permanent magnet is placed at one end of the coil. +--+-----+--+ | | | | Coil +ve Side --> | | | | --> Coil -ve Side...