When a uniform wire of resistance R is bent into a complete circle, resistance between any two diametrically opposite points will be:
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Question

When a uniform wire of resistance R is bent into a complete circle, resistance between any two diametrically opposite points will be:

G1 Physics · Accepted Answer

Step 1: Two halves have equal resistance R/2 each. Step 2: Those semicircles are in parallel between opposite points. Step 3: R(eq)=(R/2)||(R/2)=R/4.