Questions
A cube is constructed from 12 identical wires. Current enters one corner of the cube and it leaves the opposite corner. If the resistance of each wire is r, then equivalent resistance will be
detailed solution
Correct option is B
The distribution of current in the cube is shown in fig. Let V be the potential difference between A and G.Consider any path between, A and G say ABCG, we have V=2i×r+i×r+2i×r=5irLet -R be the equivalent resistance between A and G. ThenV=(6i)×Ror 5ir=6iR or R=(5/6)rTalk to our academic expert!
Similar Questions
Four wires of equal length and of resistance 10 each are connected in the form of a square. The equivalent resistance between two opposite corners of the square is
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