Kyle (kyle27larson)

Race #660

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Official speed 70.86 wpm (47.93 seconds elapsed during race)
Race Start September 16, 2019 6:01:23pm UTC
Race Finish September 16, 2019 6:02:11pm UTC
Outcome No win (3 of 5)
Opponents 1. el871109 (79.10 wpm)
2. scuba44s (71.12 wpm)
Accuracy 95.0%
Points 53.14
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.