Question

find equivalent resistance between P and Q​

Answer 1

Answer:

(2Rr)/r+R

Explanation:

the two   2R  (vertical) in the center will act as Wheatstones bridge ,thus neglect it

R(series)1=4R

"    "        2=2r

"    "         3=4R

there are in parallel thus

R(parallel )=(2rR)/r+R

(1/Rp=1/R1+1/R2+.....)

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