Question
Fri May 18, 2012 By:
 

A wire of resistance 10 ohm is drawn out so that its length is thrice its original length . Calculate the new resistance

Expert Reply
Fri May 18, 2012
As R= (SYMBOL ROW * L)/A 
which means R is directly propotional to length 
so when length of the wire is drawn three times obviously 
the resistance will be multiple of 3.

Solution: 30 ohms
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