Прочитайте текст и определите, какой из заголовков соответствует тексту
The cloud of electrons formed in the space between cathode and the plate is called space charge. The space charge is negative and hence has a repelling effect on electrons emitted from the cathode. The amount of the plate current depends on the space charge and the relative strength of the electric field set up by the positive plate voltage.
Electrons
The Plate Current
The Plate Voltage
The Space Charge