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IEVref: | 131-12-05 | ID: | |

Language: | en | Status: Standard | |

Term: | differential resistance | ||

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Symbol: | R_{d}
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Definition: | for a resistive two-terminal element or two-terminal circuit with terminals A and B, derivative of the voltage u_{AB} [131-11-56] between the terminals with respect to the electric current i in the element or circuit:$R}_{d}=\frac{\mathrm{d}{u}_{\mathrm{AB}}}{\mathrm{d}i$ where the electric current is taken as positive if its direction is from A to B and negative in the opposite case NOTE – For an ideal resistor, the differential resistance | ||

Publication date: | 2008-09 | ||

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Internal notes: | 2017-06-02: Cleanup - Remove Attached Image 131-12-05en.gif | ||

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$R}_{d}=\frac{\mathrm{d}{u}_{\mathrm{AB}}}{\mathrm{d}i$

where the electric current is taken as positive if its direction is from A to B and negative in the opposite case
_{d} is equal to its resistance *R*.