a wire of length l and area of cross-section A
taken. which statement holds good for the wire to
offer least resistance ?
a) length doubled, area halved
b) Length tripled, area doubled
c) Length halved, area doubled
d) length halved, area halved
Answers
Answered by
2
Explanation:
Given l'= l/2
A'= 2A
Hence ,
R'=P(l/2)/2A
= P(l/A)*1/4
R'=1/4(R)
Similar questions