The rms value of the voltage for a voltage function v = 10 + 5 cos (628t + 30°) volts through a circuit is (a) 5 V (b) 10 V (c) 10.6 V (d) 15 V

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A 43mH coil in series with a 1200 ohm resistor across a sine wave ac voltage source with a frequency of 6 kHz. The total impedance for the circuit is O 1620 46.5° ohm esc 2017 53.5° ohm 1200 53.5° ohm 2820 46.5° ohm ! 1 Q ← 2 W #3 C E $ 54 R G Search or type URL % 5 MacBook Pro T A 6 Y & 7 ☆ U * 8 + 1 ( 9 ( 0 ) 0 4) P + O = [ delete

The graph below shows a voltage signal as a function of time. The dc voltage is 0. t1 = 39ms and t2 = 91ms. Determine the phase of the signal. Enter your answer in degrees rounded to one decimal place. If the answer is negative, be sure to include a minus sign.