Questions
When a wire of uniform cross-section a length / and resistance R is bent into a complete circle, the resistance between any two of diametrically opposite points will be
detailed solution
Correct option is B
It is obvious from fig. that two wires of resistances R / 2 and R / 2 are connected in parallel between two points A and 8. Therefore, the equivalent resistance between two diametrically opposite points will beReq=R1R2R1+R2=(R/2)×(R/2)(R/2)+(R/2) or Req=R4Talk to our academic expert!
Similar Questions
Four wires of equal length and of resistance 10 each are connected in the form of a square. The equivalent resistance between two opposite corners of the square is
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