WAEC - Physics (2020 - No. 21)
A parallel plate capacitor is charged and the charging battery is subsequently disconnected. lf the plates of the capacitor are moved farther apart by means of insulating handles, the
capacitance would increase
capacitance would decrease
charge on the capacitor would increase
charge on the capacitor would decrease
คำอธิบาย
As the distance between the plates increases, the ability of the capacitor to store charge (capacitance) decreases. Since the battery is disconnected, the charge remains constant, but the voltage across the plates increases.