Question
Fri May 11, 2012 By:
 

a wire of resistance r is cut into 3 pieces.then these 3 pieces of original wire is arranged in such a way to get minimum equivalent resistance.the value of equivalent resistance for this configuration is

Expert Reply
Fri May 11, 2012
THe resistances of three pieces of the wire each=r/3
when they all are connected in parallel then only the eq res will be minimum.
1/R =3/r+3/r+3/r
R=r/9
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