Joe (joefromlongisland)

Race #7479

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Official speed 91.89 wpm (36.96 seconds elapsed during race)
Race Start December 31, 2018 8:00:08pm UTC
Race Finish December 31, 2018 8:00:45pm UTC
Outcome Win (1 of 3)
Opponents 2. mattbierwirth (91.45 wpm)
Accuracy 99.0%
Points 68.92
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.