A sweater made of a synthetic material becomes statically charged by friction. The sweater and the skin beneath it act as a 55 nF capacitor. The person wearing the sweater comes into contact with a conducting surface that carries away the charge stored in the capacitor by producing a 220 mV spark.
How much charge was stored in the capacitor?
How many excess electrons were stored by the sweater? Use the value C for the charge of an electron.
At the instant when the current through the resistor in the circuit shown in the diagram is 0.69 A, what charge is stored by the 22 µF capacitor in the circuit?
Which of the following formulas correctly relates the charge stored by a parallel plate capacitor to the capacitance of the capacitor, the permittivity of the medium between the plates, and the potential difference across the plates?