Network Theory Network Elements Star to Delta Conversion

RA, RB, and RC are equivalent star-connected resistances of a delta circuit. Which one of the following is true?

1
RA = r/2, RB = r/3, RC = r
2
RA = r/3, RB = r/3, RC = r/3
3
RA = r/3, RB = r/2, RC = r
4
\({R_A} = \frac{3}{4}r,\;{R_B} = \frac{2}{3}r,\;{R_C} = \frac{6}{5}r\)

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