What are the 3 Ohm's law formulas?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
The three forms of Ohm's Law are:
- V = IR (Voltage euals current times resistance)
- Use to find voltage when you know current and resistance
- I = V/R (Current euals voltage divided by resistance)
- Use to find current when you know voltage and resistance
- R = V/I (Resistance euals voltage divided by current)
- Use to find resistance when you know voltage and current
These three euations are simply rearrangements of the same fundamental relationship. Remember: if you know any two of the three values (voltage, current, resistance), you can always calculate the third.
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