Two conductors A and B are such that the cross section area of A is twice that of B and the length of B is...

      

Two conductors A and B are such that the cross section area of A is twice that of B and the length of B is
twice that of A. If the two are made from the same material, determine the ratio of the resistance of A to
that of B.

  

Answers


Moraa
R=?L/A
Therefore, RA= ?ALA/AA
And RB= ?BLB/AB
Where LB=2LA
AB= 1/2AA
And ?A= ?B
Hence RA=?ALA/AA and
RB= 2?ALA/0.5AA = 4?ALA/AA
Thus RA/RB=?ALA/AA = 1/4
4?ALA/AA
RA: RB= 1:4
Moraa orina answered the question on April 10, 2018 at 17:41


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