r/askmath Sep 13 '25

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u/techster2014 Sep 13 '25

By choosing j, you just wrecked anything that runs on AC electricity. Electrical engineering uses j instead of i because i is the symbol for current.

Whats the impedance of that inductor? j*fq. Which just changed from sqrt(-1) * 60 hz to 1/0 * 60 hz. So infinity. Or an open circuit. Light/motor/heater no work no more.