Q.

A wire of resistance ‘4R’ is bent in the form of a circle. What is the effective resistance between the ends of the diameter ?

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Detailed Solution

If a wire of resistance ‘4R’ is bent in the form a circle. The resistance of upper and lower part’s becomes 2R, 2R respectively. They are in parallel i.e R1=R2=2R
Question Image
1RP=1R1+1R2 ; 1RP=12R+12R1RP=22R1R,RP=

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