For the capacitor circuit in Figure 1 a. Determine the time constant of the circuit. b. Write the mathematical equation for the voltage v., VRI. VEz and current i following the closing of the switch. c. Determine the value of V, V and after one, three and five time constants. d. Sketch the waveforms for v. e.V. and vaz to E = 20 V- +VRI- www R₁ - 3 ko - VR2 + R = 2 kQ c C= 4.7 με Vc

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HVDC

HVDC stands for high voltage direct current in the electric power transmission system. The high voltage direct current system uses direct current (DC) for the transmission of electrical power through transmission lines in contrast with the alternating current that is the AC system. The HVDC is used to transmit bulk power point-to-point through long distances transmission lines. Power is rapidly transferred because the efficiency of transmission lines is greatly increased over long distances due to HVDC lines.