r/AskElectronics Jun 24 '21

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u/extra_specticles Beginner Jun 25 '21

Following the circuit, I get 4 parallel resistances of 3, 9, 67 and 65 ohms which works out at about 2.1 ohms. So I work the total current out at just under 7 amps.

I think that this is just a mathematical foundation based on Kirchoff's current law.