Tanthauzo la mphamvu yamagetsi
Mphamvu yomwe imaphunziridwa mu ntchito ndi Mphamvu imatsimikiziridwa ngati ntchito yomwe yachitika panthawi inayake. Ntchito ndi njira yosinthira mphamvu kotero kuti mphamvuyo imvetsetsedwe ngati kusintha kwa mphamvu komwe kumachitika panthawi inayake.
Mphamvu yamagetsi ndi kusintha kwa mphamvu yamagetsi mkati mwa nthawi inayake. Mu ndemanga ya mphamvu yamagetsi, zafotokozedwa kuti kusintha kwa mphamvu yamagetsi kumachitika pamene mphamvu yamagetsi imadutsa mu kusiyana kwa mphamvu yamagetsi.
Equation ya mphamvu yamagetsi
Mwa masamu, kusintha kwa mphamvu yamagetsi (ΔEP) kumafanana ndi mphamvu (Q) ndi mphamvu yamagetsi (V), zomwe zimafotokozedwa ndi equation ΔEP = Q V.
Mphamvu ndi kusintha kwa mphamvu zamagetsi pakapita nthawi inayake, komwe kumafotokozedwa mwa masamu kudzera mu equation 1:
Mphamvu yamagetsi yomwe imayenda mkati mwa nthawi inayake ndi mphamvu yamagetsi, yomwe imafotokozedwa mwa masamu kudzera mu equation I = Q/t. Equation 1 ikhoza kusinthidwa kukhala equation 2:
Kutengera ndi ma equation awiriwa, zitha kutsimikiziridwa kuti kusintha kwa mphamvu zamagetsi mkati mwa nthawi inayake kumachitika pamene mphamvu yamagetsi imadutsa mu kusiyana kwa mphamvu yamagetsi. Mphamvu yamagetsi imafanana ndi mphamvu ya mphamvu yamagetsi ndi mphamvu yamagetsi, kotero ngati mphamvu yamagetsi ndi mphamvu yamagetsi zikuwonjezeka, mphamvu yamagetsi imawonjezekanso.
Ngati mphamvu yamagetsi ikuyenda kudzera mu resistor yomwe ili ndi kukana kwamagetsi kosalekeza, mphamvu yamagetsi ikhoza kuwerengedwa pogwiritsa ntchito equation 3 kapena equation 4.
Gawo la mphamvu yamagetsi
Kutengera ndi equation 1, gawo la Mphamvu la International System ndi Joule ndipo gawo la International System la nthawi ndi lachiwiri kotero kuti gawo la mphamvu yamagetsi ndi Joule/sekondi, mwachidule J/s. Joule/sekondi amatchedwanso Watt. 1 Watt = 1 Joule/sekondi.
Kutengera ndi equation 2, unit of electric potential ndi Volt ndipo unit of electric current ndi Ampere kotero kuti unit of electric power ndi Volt Ampere, mwachidule VA.
