An alternating circuit that has peak voltage of 38.01
V and a frequency of 60 Hz powers a device with a resistance of 48
ohms.
(a) What is the current at 0.03 s?
(b) How much energy does the device use in one hour?
a)
I = Io sin (wt)
I = (38.01/ 48) sin ( 2 * 3.14* 60* 0.03)
I = 0.155 A
b)
E = Vrms^2* t / R
E = (38.01/ sqrt(2)) * 60*60 / 48
E = 2015.785 J
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An alternating circuit that has peak voltage of 38.01 V and a frequency of 60 Hz...
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