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Twelve resistors each of resistance 1 Ω are connected as shown in the figure. Net resistance between points A and H would be

Options

  1. A5 6 Ω
  2. B1   Ω
  3. C3 4   Ω
  4. D7 12 Ω

Correct answer

C. 3 4   Ω

Step-by-step solution

Let current i enters from point A and leaves at H. Then current can be distributed as follows : from the above diagram we can see that no current will flow in wires CE and FD. So, the simple circuit is as follows: ∴ R AH = 3 4 Ω

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