Question: Ra is resistance at A, Rb is resistance at B, Rc is resistance at C in star connection. After transforming to delta, what is resistance between B and C?
Options
A : Rc+Rb+Rc*Rb/Ra
B : Rc+Rb+Ra*Rb/Rc
C : Ra+Rb+Ra*Rc/Rb
D : Rc+Rb+Rc*Ra/Rb
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