At what two times in the first period following t = 0 does the instantaneous voltage in 37 Hz AC equal Vrms? (Enter the first two times t, and t,. Assume zero phase shift.) t = ms t2 = ms
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- The voltage supplied to an ac circuit is given by v = (120 sin(60t))V. What are the rms voltage and the frequency? a) 120 V, 60 Hz b) 120 V, 380 Hz c) 170 V, 9.5 Hz d) 85 V, 9.5 Hz e) 240 V, 30 HzThe following table gives the reactance and rms voltage across the elements of a series RCL circuit: Circuit element Reactance Voltage across element resistor 2.00 x 102Q 86 V capacitor 6.63 × 10² Q 285 V inductor 3.77 x 1020 162 V What is the power factor for this circuit? O 0.81 O 5.5 O 0.40 O 1.4 O 0.57Please box answers
- Write an expression for the output voltage of an ac source that has an amplitude of 8 V and a frequency of 100 Hz. Use t as the variable for time in seconds, and assume that V(t = 0) = 0V. V(t) =Find the time (in ms) after t = 0 when the instantaneous voltage of 90 Hz AC first reaches the following values. (Assume V = 0 and V is increasing att = 0.) Vo (a) ms (b) Vo ms (c) 0 ms1) Determine the change in chemical energy each second required to produce this increase in electric potential energy. 2) If there are roughly 7×10^11 of these cells in the body, how much chemical energy is used in pumping sodium ions each second? 3) Estimate the fraction of a person's metabolic rate used to pump these ions. Assume the metabolic rate to be 100 W.
- Two step-up transformers are connected in series, the secondary of the first to the primary of the second. Both transformers have a turns ratio of 1:5 (primary:secondary). What will be the output voltage, Vout, when an input voltage of 12.0 V AC is applied? Vout = [?] V Voltage (V) EnterWhat maximum current is delivered by an AC source with AV max = 39.4 V and f = 76.8 Hz when connected across a 3.70-µF capacitor? mANeeds Complete solution with 100 % accuracy.