# Tau on, Tau off

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An RC network is shown below:

The voltage v and the current i are constant for all time. Prior to t = 0, the circuit is in equilibrium with the switch closed. At time t = 0, the switch is opened, and it is then closed some time later. The waveform below is observed for v_C(t):

What are the value of \tau_1, \tau_2, and the final value V_1? Note: The figure may not be to scale.

What is \tau_1 in seconds?

What is \tau_2 in seconds?

What is V_1 in volts?