Muchidzidzo fundoyetsimba, Pawa (Power) izwi rinodudzira kuitwa kwebasa paumwe hwechiyero chenguva. Pawa inopimwa nechiyero chinonzi Watt kana kuti (Joules/Second). Kana takatarisa mwenje wegetsi yakanyorwa kunzi 100Watts umwe 50Watts, kureva kuti mwenje wokutanga unoshandisa simba remagetsi rakapwetwa kaviri zvichienzaniswa nemwenje wechipiri. Uye tikatora varume vaviri wokutanga asenga masaga 50 echibage pama hour 4, wepiri akasenga masaga echibage 50 pamaawa 6 - wekutanga anenge ashanda nepawa rakakura pane wepiri. Kushandurwa kwesimba kunogona kushandiswa kuita basa saka pawa inogonawo kurehwa sehuyero hwemudida (rate) wekuita basa. Basa rakafanana rinogona kuitwa nemunhu anokwira masitepusi akatakura saga rehupfu zvisinei kuti amhanya kana kuti afamba here, asi pawa yakawandiswa inoshandiswa pakumhanya nekuti basa racho rinoitwa munguva ishoma kupfura kana munhu wacho akamhanya. Nzenda (dimension) yepawa isimba kugova pana nguva. Chiyerwo muSI iWatt, yakatsazana neJoule rimwe pasekondi. Zvimwewo zviyero zvepawa zvinosanganisirawo masimbabhiza (horsepower), mafoot-pounds pamineti, nemakarori (calorie) paawa anoshandiswa munezvekudya. Simbabhiza rimwe rakaenzana nema33 000 foot-pounds pamineti zvakaenzanawo nemawatt 746. Pawa mumasisitemu echimakanika (mechanical systems) isanganisiro yemafosi nehusuduruka.