Question
Wed June 06, 2012 By: Sureshkumarsharma

RIGHT HAND THUMB RULE..

Expert Reply
Fri June 08, 2012
Maxwell's right hand thumb rule states that if you hold the current carrying wire in your right hand so that your thumb points in the direction of the current, then the direction in which your fingers encircle the wire give you the direction of the magnetic lines of force around the wire .On reversing the direction of current in the 
wire , the direction of the magnetic lines of force is also reversed.
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