关于本计算器
Solve V = I·R for the missing quantity and always get power P = V·I.
电压电流电阻功率。
Solve V = I·R for the missing quantity and always get power P = V·I.
Cover the unknown in V over I·R: V = I·R, I = V/R, R = V/I.
P = V·I in watts — heat and light a resistor actually delivers.
Near-zero R means huge I: fuses and breakers exist for that.