Dị ka capacitors, eriri ọkụ, mgbe ị na-echekwa ụgwọ na ịmepụta ọkụ eletrik, na-enwe ike ịhapụ ụgwọ ahụ ma nọgide na-enwe ọkụ eletrik ruo oge ụfọdụ. N'oge usoro a nke ịchekwa na ịtọhapụ ụgwọ, eriri ọkụ na-enweta mgbanwe na ike eletrik na njupụta ụgwọ, ihe ndị na-emetụtakarị àgwà na arụmọrụ nke eriri USB.
Enwere ike iji eriri ọkụ tụnyere capacitors ma n'usoro ma n'usoro arụmọrụ. N'usoro, onye na-eduzi, insulator, na n'ọbọ mpụta dị n'ime eriri yiri nke electrodes, dielectric, na ihe mkpuchi elu n'ime capacitor. Arụmọrụ - n'amamihe, usoro nke eriri USB, dị ka ike na-arụ ọrụ, ike reactive, na harmonics, dị nnọọ ka nke capacitors.
