A metallic wire of resistance 100Ω is bent into a circle having circumference equal to the length of the wire. What is the equivalent resistance between two diametrically opposite points of the circle?

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A metallic wire of resistance 100Ω is bent into a circle having circumference equal to the length of the wire. The equivalent resistance between two diametrically opposite points of the circle is?

A75Ω

B50Ω

C100Ω

D25Ω

Answer:

D. 25Ω

Read Explanation:

The wire forms two parallel halves with a total resistance of 100 Ω
So the equivalent resistance between opposite points is 25 Ω