Home Physics Current Electricity Grouping of Resistances Thirteen resistances each of resistance R oh…
Physics Current Electricity Grouping of Resistances MCQ (Single Correct)

Thirteen resistances each of resistance R ohm are connected in the circuit as shown in the figure below. The effective resistance between A and B is

A
2R Ω Ω
B
C
D
R Ω Ω

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The correct answer is:
C

From symmetry, we get the following circuit diagram for half circuit,

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