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Ohms law and current intensity Ohm's law, or the law of electric conduction, establishes the connections between: - the intensity of the electric current (I) in an electrical circuit, - voltage (V) or applied electrical voltage (U) and - electrical resistance (R) in the circuit. I = V / R |
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Complete two fields: intensity, voltage or resistance | ||
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How to convert |
The mathematical formula for Ohm's law is: I = V / R or I = U / R Ohm's law equation in a circuit: I = E / (R + r) where: I - current intensity, measured in amperes (A); U or V - applied voltage, measured in volts (V); E - electromotive voltage, measured in volts (V); R - circuit resistance, measured in ohms (Ω); r - internal resistance of the source, measured in ohms (Ω); I = U / R R = U / I U = I X R |
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measurement units |