Consider the circuit in the figure below, in which V = 3 V, and the switch has been in position a for a long time. The switch is changed to position b at t = 0 s. What are the charge Q on the capacitor and the current I through the resistor at the times tabulated below?
![63_Circuit in the figure.png](https://secure.tutorsglobe.com/CMSImages/63_Circuit%20in%20the%20figure.png)
(a) What is the time constant τ for this circuit?