Q1 of 19 Page 12

A wire that has resistance R is cut into two equal piece. The two parts are joined in parallel. What is the resistance of the combination? ( CBSE 2010, 2009)

As the wire is cut into two equal pieces. So resistance of each part is R/2.

The two parts are joined in parallel. So the equivalent resistance will be


1/Requivalent = 2/R + 2/R


1/Requivalent= 4/R


Requivalent = R/4

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