Ohm’s law calculator

How to use ohm’s law calculator

Set Known values, First value (volts or amps), Second value (ohms or amps). Select Calculate, then review the result. Use the download or copy controls to keep it. Reset restores the starting settings and clears the result.

For ideal resistive loads. In Voltage & resistance mode, enter volts then ohms; Voltage & current uses volts then amps; Current & resistance uses amps then ohms.

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