A wire has resistance 12Ω. It is bent in the form of a circle. The effective resistance between the two points on any diameter of the circle is ?

Foundation

Physics Foundation

Ohms Law and Resistance

Question

12Ω

24Ω

6Ω

3Ω

Here when wire is bent into circle half port of wire is across one side of diameter and other is on another side.

$∴ R_{AB} = \frac{6 \times 6}{6 + 6} = \frac{36}{12} = 3 Ω$ .

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