Current Electricity and Electrical InstrumentHard

Question

In the diagram shown, all the wires have resistance R. The  equivalent resistance between the upper lower dots shown in the diagram is

Options

A.R/8
B.R
C.2R/8
D.3R/8

Solution


Points 1, 2, 3 ........... 8 are of same potential and 1′, 2′, 3′ .......8′  are of same potential.
Req =

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