Q2. The patient accidentally touches on the power line during the ECG measurement. The induced current in the human body near a power line is 1 μA. Assume that the power line voltage is 120 V, and the line frequency is 50 Hz. The input impedance of the ECG is 10 M2. The skin-electrode impedance (Zi-Z2-ZG) is 50 K2. a. Estimate the common-mode voltage Vem, and the capacitance between the human body and the power line. b. Find the common-mode voltage Vcm if the human body is not grounded. Power ling 120V -T Z, 72 Fig.2