Bob (bugena123)

Race #350

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Official speed 89.65 wpm (37.88 seconds elapsed during race)
Race Start January 17, 2020 8:13:56pm UTC
Race Finish January 17, 2020 8:14:34pm UTC
Outcome No win (3 of 5)
Opponents 1. carrot_ (101.85 wpm)
Accuracy 97.0%
Points 67.24
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.