The capacitor can be charged by connecting one plate.
Editor: A capacitor is a device for storing charge. In this simulation, you can INVESTigate a relatively simple capacitor, known as a parallel-plate capacitor. It consists of two identical metal Plates, placed parallel to one another. The capacitor can be charged by connecting one plate to the positive terminal of a battery and the other plate to the Negative terminal. In this situation, the battery acts as a pump, pumping electrons from one capacitor plate to the other until the potential difference across the capacitor matches the Battery Voltage. you can free download Parallel-Plate Capacitor with Dielectric Model now.