An air-filled parallel plate capacitor is being used in an electrical circuits laboratory. The plates are separated by 1.50 mm and each has a diameter of 15.0 cm.
(a) What is the capacitance of this plate arrangement?
(b) The capacitor is then connected in series to a 100-Ω resistor and a 100-V DC power supply. How long does it take to charge the capacitor to 80% of its maximum charge, and what is that maximum charge?
(c) How long does it take to charge the capacitor to 80% of its maximum stored energy, and what is the maximum stored energy?
(d) Are the times for part (c) and (d) the same? Explain.