31. Alternating Current
Phasors
Multiple Choice
Multiple ChoiceA phasor of length 4 begins at 0° . If it is rotating at ω = 250 s−1 , what is the value of the phasor after 0.007 s?
A
0.2
B
0.7
C
3.1
D
3.9
E
4.0
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