**• Calculation: electrical voltage, current, resistance, and power •**

The nominal impedance *Z* = 4, 8, and 16 ohms (loudspeakers) is often assumed as resistance *R*.

Ohm's law: *E = R × I* and power law: *P = E × I*.

*P* = power, *I* = intensity, *E* = electro motive force (EMF = voltage), *V* = voltage, potential difference, *R* = resistance.

The missing values will be calculated. Enter two values.

** V** or

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