欧姆定律

输入任意两个值，然后按下“计算”键来确定其它两个值。

  • 伏特 (V)
  • 安培 (A)
  • 欧姆 (Ω)
  • 瓦特  (W)

Ohm's Law describes the relationships that exist between voltage, current, and resistance. Quantities of these properties are expressed in volts (V); amperes, "amps" (A); and ohms (Ω) respectively. The product of voltage and current is the applied power and is expressed in watts (W).

A diagram that explains Ohm's Law.
  • E = IxR
  • W = ExI

FAQs

The Ohm’s Law calculator calculates voltage, current, resistance, and power.

It helps designers understand electrical behavior and prevent overload conditions.

No. It applies general electrical principles used in AV systems.

Yes. Always confirm results against manufacturer specifications.