Question 3 What is the phase difference between vr and ve in an RC circuit such as that in Fig. C3-5 when a sinusoidal voltage is applied? O There is a 90-degree phase difference with vp being ahead. O There is a 90-degree phase difference with vc being ahead. O The phase difference depends on the frequency of the driving voltage. O There is a 180-degree phase difference between the two voltages.