Question

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?

• A. 75Ω
• B. 50Ω
• C. 100Ω
• D. 25Ω

Answer 1

Answer:

D. 25Ω

• The wire forms two parallel halves with a total resistance of 100 Ω

• So the equivalent resistance between opposite points is 25 Ω