given a electric circuit (in the picture).(adsbygoogle = window.adsbygoogle || []).push({});

i asked to find the current in R1

i got 4 equations:

500a-100b-200c-100d=0

-100a+300b-100c-0d=100

-200a-100b+400c-100c=0

-100a-0b-100c+300d=-100

i solved them and got: { a = 1/6, b = 23/48, c = 13/48, d = -3/16 }

but is not correct.

so what i do wrong?

thanks.

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# Homework Help: I need a way to find the current

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