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Find an equivalent resistance between a & B.
written 9.5 years ago by gravatar for teamques10 teamques10 ★ 70k •   modified 5.7 years ago

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basic electrical engineering
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written 9.5 years ago by gravatar for teamques10 teamques10 ★ 70k

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Delta to star conversion

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$R_1=\dfrac{20\times25}{20+25+35}=6.25 \Omega \\ R_2=\dfrac{20\times35}{20+25+35}=8.75 \Omega \\ R_3=\dfrac{25\times35}{20+25+35}=1.938 \Omega$

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$R_{AB}=15+17.358 \\ R_{AB}=32.358 \Omega$
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