Alec (killjoy722)

Race #143

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Official speed 74.66 wpm (45.49 seconds elapsed during race)
Race Start September 22, 2019 9:01:15pm UTC
Race Finish September 22, 2019 9:02:01pm UTC
Outcome No win (4 of 5)
Accuracy 96.0%
Points 56.00
Text #4060102 (Length: 283 characters)

Transformers and most electric motors operate on alternating current. In such devices the flux in the iron changes continuously both in value and direction. The magnetic domains are therefore oriented first in one direction, then the other, at a rate that depends upon the frequency.