Ohm's Law is the most fundamental principle in electrical engineering, describing the relationship between Voltage (V), Current (I), and Resistance (R). It states that the current flowing through a conductor is directly proportional to the voltage applied and inversely proportional to the resistance. Whether you are troubleshooting a household appliance, designing an LED circuit for a hobby project, or studying for a physics exam, understanding these values is critical. Our Ohm's Law Calculator allows you to input any two known values to solve for the others, including Power (Watts).
任意の2つの値を入力して、残りの値を計算します。
回路解析
12.00 V
12.00V, 2.00A, 6.00Ω, 24.00W
Voltage (V)12.00
Current (I)2.00
Resistance (R)6.00
Power (P)24.00
使い方
The tool identifies which variables you have provided and applies the corresponding algebraic rearrangement of V=IR. It also solves for Power using the standard P=VI or P=I²R formulas.