Math and Physics Calculators

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Calculate Electrical Resistance

resistance = voltage / amperage
R = U / I

R: ohms
U: volts
I: amperes

Please enter two values, the third will be calculated.

Electric Conductance

The electric conductance is the opposite of the resistance, that is amperage / voltage. It is measured in siemens or mho.
G = I / U

G: siemens
I: amperes
U: volts

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