PrismKit計算機歐姆定律計算機歐姆定律計算機在瀏覽器中執行本機複製連結Markdown輸入電壓、電流、電阻、功率中任意兩項即可求出另外兩項，支援 4.7k、20m 等 SI 字首。電費計算機Work out the electricity use and running cost of one or more devices per day, month and year.分壓計算機Work out a divider's output voltage, current and resistor power, or find R1 for a target voltage with the nearest E12, E24 and E96 values.