An AC generator produces a sinusoidal voltage. Doubling the rotation speed will: A) Double frequency, double peak voltage B) Double frequency only C) Halve frequency, double voltage D) No change
(a) ( \tau = RC = (50 \times 10^3) \times (100 \times 10^-6) = 5 \text seconds ) (b) Discharge equation: ( V = V_0 e^-t/RC \rightarrow 8 = 12 e^-t/5 ) ( \frac812 = e^-t/5 \rightarrow \ln(0.6667) = -\fract5 \rightarrow t = -5 \times (-0.4055) = 2.03 \text s ) physics module 6 questions