A capacitor of capacitance C = 4.5 µF is initially uncharged. It is connected in series with a switch of negligible resistance, a resistor of resistance R = 7.5 kΩ, and a battery which provides a potential difference of VB = 165 V.
Calculate the time constant τ for the circuit in seconds.
After a very long time after the switch has been closed, what is the voltage drop VC across the capacitor in terms of VB?
Calculate the charge Q on the capacitor a very long time after the switch has been closed in C.
Calculate the current I a very long time after the switch has been closed in A.
Calculate the time t after which the current through the resistor is one-third of its maximum value in s.
Calculate the charge Q on the capacitor when the current in the resistor equals one third its maximum value in C.