Capacitor mudziyo unochengetedza chaji yemagetsi uye simba rinogona kushandiswa . Capacitor iri nyore ine maplate maviri ekufambisa kana machira akaiswa pedyo asi asingabatani, akaparadzaniswa neinsulator kana vacuum. Kondakita chinhu chinogona kuitisa magetsi, senge simbi, nepo insulator iri chinhu chisingakwanise kuitisa magetsi, senge purasitiki.
Pakutanga, maconductor ese ari maviri haana simba remagetsi. Kuti conductor imwe ive nechaji yakanaka uye imwe ive nechaji yakaipa, maerekitironi anofanira kutamiswa kubva kune conductor imwe kuenda kune imwe. Maerekitironi ari pamusoro pemaatomu saka anotakurwa zviri nyore. Mushure mekunge maerekitironi afamba kubva kune conductor imwe kuenda kune imwe, conductor imwe ine maerekitironi akawanda (kushomeka kwemapurotoni) uye nokudaro inova nechaji yakaipa, nepo conductor imwe ine maerekitironi akawanda (kuwanda kwemapurotoni) uye nokudaro inova nechaji yakanaka. Tsananguro yakadzama yemaitiro ekuchaja capacitor inokurukurwa munyaya yekuchengetedza simba remagetsi muma capacitors.
Sezvakaratidzwa pamufananidzo weparutivi, imwe yemaplate econductor ine positive charge (+Q) nepo imwe conductor plate ine negative charge (-Q). Chaji yemagetsi paplate yega yega yakaenzana asi yakatarisana nechiratidzo zvekuti huwandu hwese hwechaji izero (QQ=0). Kuvapo kwechaji dzemagetsi dzine hukuru hwakafanana uye dzakapesana nechiratidzo paplate yega yega kunoita kuti pave nemusiyano pakati peplate mbiri. Conductor ine positive charge ine positive potential yakakura nepo conductor ine negative charge ine positive potential yakaderera. Nemamwe mashoko, pane field yemagetsi pakati pemaconductor maviri ane charge, uko kutungamira kwesimba remagetsi kuri kubva pachaji yakanaka kuenda pachaji isina kunaka. Sezvakakurukurwa munyaya ye electric potential energy, kana paine electric field kana electric potential difference pakati peplate mbiri dzeconductor saka panofanira kunge paine electric potential energy pamaplate ese ari maviri.
Simba rinogona kushandiswa ndiko kugona kushanda. Kana capacitor ikachengeta simba rinogona kushandiswa nemagetsi, ine simba rekushanda. Muchokwadi, ma capacitor ane mashandisirwo akawanda muhupenyu hwezuva nezuva. Ma capacitor chikamu chakakosha mumaseketi emagetsi, ayo ari hwaro hwezvishandiso zvakasiyana-siyana zvemagetsi.
