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Race #720

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Official speed 193.68 wpm (17.53 seconds elapsed during race)
Race Start October 28, 2020 7:07:41pm UTC
Race Finish October 28, 2020 7:07:59pm UTC
Outcome No win (1 of 1)
Accuracy 100.0%
Points 145.26
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.