Lus qhia rau kev siv: Hloov ua lwm yam amps (А) mus volts (В), nkag mus rau tam sim no I hauv amperes (А), zog P hauv watts (Hnub Tuesday) los yog tsis kam R hauv ohms (Ω), ces nias lub pob “Cuas”. Yog li, tus nqi voltage yuav tau txais U в AT.
Cov ntsiab lus
Tshuab xam zauv А в В (ntawm watts)
Formula rau kev txhais lus А в В
voltage U hauv volts (В) yog sib npaug zog P hauv watts (Hnub Tuesday) muab faib los ntawm lub zog tam sim no I hauv amperes (А).
Tshuab xam zauv А в В (los ntawm ohms)
Formula rau kev txhais lus А в В
UВ = kuvА × RΩ
voltage U hauv volts (В) yog sib npaug rau cov khoom ntawm lub zog tam sim no I hauv amperes (А) thiab tiv taus R hauv ohms (Ω).