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Q.

A wire of resistance 18 ohm is bent to form an equilateral triangle. The resistance across any two vertices of the triangle is (in ohm)

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a

12

b

9

c

4

d

6

answer is C.

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Detailed Solution

Question Image

12 ohm and 6 ohm are in parallel

$R_{A B} = \frac{12 \times 6}{12 + 6} = 4 Ω$

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