A network of twelve resistances each of resistance R form a square of – McqOptions

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1.	A network of twelve resistances each of resistance R form a square of squares as shown in the figure. The outer square is fitted in a metal ring of negligible resistance. Find the resistance between centre of the square and the ring.
A.	R/4
B.	R/2
C.	3R/8
D.	R/12
Answer» D. R/12

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