Capacitor: A pair of conductors,whether separated by empty space or nonconducting material,forms a capacitor Capacitor is a useful device to store energy and charge Capacitance:(电容) The constant that is the charge on either plate of the capacitor divided by potential difference of two plates 1F=1C/V AUCapacitor: A pair of conductors, whether separated by empty space or nonconducting material , forms a capacitor Capacitance:（电容） The constant that is the charge on either plate of the capacitor divided by potential difference of two plates Capacitor is a useful device to store energy and charge 1F=1C/V