The resistor ndi gawo lamagetsi lopanda mphamvu kuti lipangitse kukana pakuyenda kwamagetsi. Pafupifupi pafupifupi ma netiweki onse amagetsi ndi mabwalo apakompyuta amatha kupezeka. Kukana kumayesedwa mu ohms. An ohm ndi kukana komwe kumachitika pamene mphamvu ya ampere imodzi ikudutsa pazitsulo ndi dontho limodzi la volt kudutsa ma terminals ake. Pakali pano ndi molingana ndi ma voltage pa ma terminal. Chiŵerengero ichi chikuimiridwa ndilamulo la Ohm:

Resistors amagwiritsidwa ntchito pazinthu zambiri. Zitsanzo zingapo zikuphatikizapo delimit electric current, voltage divivision, heat generation, matching and loading circuits, control gain, and fix time constants. Amapezeka pamalonda ndi miyeso yotsutsa pamitundu yopitilira madongosolo asanu ndi anayi a ukulu. Atha kugwiritsidwa ntchito ngati mabuleki amagetsi kuti awononge mphamvu ya kinetic kuchokera ku masitima apamtunda, kapena kukhala ang'onoang'ono kuposa masikweya millimeter pazamagetsi.

Makhalidwe Otsutsana (Makhalidwe Okondedwa)
M'zaka za m'ma 1950 kuchulukitsidwa kwa ma resistors kudapangitsa kuti pakhale kufunikira kokhazikika kokana. Kusiyanasiyana kwa zikhalidwe zotsutsa kumakhazikitsidwa ndi zomwe zimatchedwa kuti zokonda. Makhalidwe omwe amakonda amafotokozedwa mu E-series. Mu mndandanda wa E, mtengo uliwonse ndi wokwera kwambiri kuposa wam'mbuyomu. Zosiyanasiyana za E-zilipo zololera zosiyanasiyana.

Ntchito zotsutsa
Pali kusiyana kwakukulu m'magawo a ntchito za resistors; kuchokera pazigawo zolondola zamagetsi a digito, mpaka zida zoyezera kuchuluka kwa thupi. M'mutu uno mapulogalamu angapo otchuka alembedwa.

Resistors mu mndandanda ndi kufanana
M'mabwalo apakompyuta, ma resistor nthawi zambiri amalumikizidwa mndandanda kapena mofananira. Wokonza dera amatha mwachitsanzo kuphatikiza zopinga zingapo zokhala ndi milingo yokhazikika (E-series) kuti afikire mtengo wake wokana. Pakulumikiza kwa mndandanda, zomwe zilipo kudzera pa chopinga chilichonse ndizofanana ndipo kukana kofanana ndi kofanana ndi kuchuluka kwa zopinga. Pakulumikizana kofananira, voteji kudzera pa chopinga chilichonse ndi chofanana, ndipo chopinga cha kukana kofanana ndi chofanana ndi kuchuluka kwamitengo yosiyana kwa onse otsutsana nawo. M'nkhani zotsutsana ndi zofanana ndi mndandanda watsatanetsatane wa zitsanzo zowerengera zaperekedwa. Kuti athetse ma network ovuta kwambiri, malamulo ozungulira a Kirchhoff angagwiritsidwe ntchito.

Yezerani mphamvu zamagetsi (shunt resistor)
Mphamvu yamagetsi imatha kuwerengedwa poyesa kutsika kwa voteji pamwamba pa chopinga cholondola ndi kukana kodziwika, komwe kumalumikizidwa motsatizana ndi dera. Panopa amawerengedwa pogwiritsa ntchito lamulo la Ohm. Izi zimatchedwa ammeter kapena shunt resistor. Nthawi zambiri ichi ndi chopinga chapamwamba kwambiri cha manganin chokhala ndi mtengo wotsika.

Zotsutsa za LED
Magetsi a LED amafunikira magetsi apadera kuti agwire ntchito. Kutsika kwambiri sikungayatse nyali ya LED, pomwe magetsi okwera kwambiri amatha kuyatsa chipangizocho. Chifukwa chake, nthawi zambiri amalumikizidwa ndi ma resistors. Izi zimatchedwa ballast resistors ndipo zimayendetsa mosasamala zomwe zikuchitika muderali.

Blower motor resistor
M'magalimoto makina olowera mpweya amayendetsedwa ndi fan yomwe imayendetsedwa ndi chowombera. Chotsutsa chapadera chimagwiritsidwa ntchito kuwongolera liwiro la fan. Izi zimatchedwa blower motor resistor. Mapangidwe osiyanasiyana akugwiritsidwa ntchito. Kapangidwe kamodzi ndi mitundu ingapo ya ma wirewound resistors osiyanasiyana pa liwiro lililonse la fan. Kukonzekera kwina kumaphatikizapo dera lophatikizidwa bwino pa bolodi losindikizidwa.