What is the value of Is?

what is the value of the current that passes through the voltage source

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  • 2 months ago
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    you need to take 3 of those resistors and do a delta to wye transformation. I'll transform the 25,15, and 10

    R1 = 25•15 / (25+15+10) = 375/50 = 7.5

    R2 = 150/50 = 3

    R3 = 250/50 = 5

    now you have 25 series 5 = 30

     10 series 7.5 = 17.5

    those two in parallel = 30•17.5/47.5 = 11.1 Ω

    that is in series with 4 and 2.5 = 17.6

    and I = E/R = 15/17.5 = 0.85 amps

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