Question: a parallelplate capacitor has a plate separation of 290 mm...
A parallel‑plate capacitor has a plate separation of 2.90 mm. If the material between the plates is air, what plate area 𝐴 is required to provide a capacitance of 2.30 pF?
You have two capacitors, one with capacitance 17.7×10−6 F and the other of unknown capacitance. You connect the two capacitors in series with a voltage of 315 V applied across the capacitor pair. You discover that, as a result, the unknown capacitor has a charge of 0.00185 C. Find its capacitance 𝐶 .