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Electrical conductivity (or specific conductance) is the reciprocal of electrical resistivity. It represents a material's ability to conduct electric current. It represents a material's ability to conduct electric current.
Also called chordal or DC resistance This corresponds to the usual definition of resistance; the voltage divided by the current R s t a t i c = V I. {\displaystyle R_{\mathrm {static} }={V \over I}.} It is the slope of the line (chord) from the origin through the point on the curve. Static resistance determines the power dissipation in an electrical component. Points on the current–voltage ...
The minus sign is not present in the relationship between electrical resistance and the analogue of conductance {} , but otherwise a similar relation holds for the special case of reactance-free impedance (or susceptance-free admittance):
Substituting Ohm's law for conductance then gives, = + which in turn gives the formula for the equivalent conductance, = +. This equation can be rearranged slightly, though this is a special case that will only rearrange like this for two components.
The relationship between thermal conductivity and conductance is analogous to the relationship between electrical conductivity and electrical conductance. Thermal resistance is the inverse of thermal conductance. [6] It is a convenient measure to use in multicomponent design since thermal resistances are additive when occurring in series. [7]
Transconductance (for transfer conductance), also infrequently called mutual conductance, is the electrical characteristic relating the current through the output of a device to the voltage across the input of a device. Conductance is the reciprocal of resistance. Transadmittance (or transfer admittance) is the AC equivalent of transconductance.
The following formulae use it, assuming a constant voltage applied across the capacitor and resistor in series, to determine the voltage across the capacitor against time: Charging toward applied voltage (initially zero voltage across capacitor, constant V 0 across resistor and capacitor together) V 0 : V ( t ) = V 0 ( 1 − e − t / τ ...
The relationship between thermal conductance and resistance is analogous to that between electrical conductance and resistance in the domain of electronics. Thermal insulance ( R -value ) is a measure of a material's resistance to the heat current.