Eight copper wire of length 
and diameter d are joined in parallel to form a single composite conductor of resistance R. If a single copper wire of length 2 
have the same resistance (R) then its diameter will be _________ d.
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
(4)
Each wire has resistance 
Eight wire in parallel, then equivalent resistance is
Single copper wire of length 
has resistance
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