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To convert from Siemens (S) to Microsiemens (µS), you multiply by 1,000,000, as there are one million microsiemens in one siemens.
Example:
A component has a conductance of 0.005 S. What is its conductance in Microsiemens?
0.005 S * 1,000,000 µS/S = 5,000 µS
Answer: The conductance is 5,000 µS.
Electrical conductance is a measure of how easily electric current flows through a material or an electrical component. It is the direct reciprocal of electrical resistance. While resistance quantifies the opposition to current flow, conductance quantifies the 'easiness' of that flow. A component with high conductance allows current to pass through it with very little opposition, whereas a component with low conductance significantly impedes the flow of current. The concept provides an alternative and sometimes more convenient perspective for analyzing electrical circuits, particularly in parallel circuits where the total conductance is simply the sum of individual conductances.
The standard unit of conductance is the Siemens (S), named after the German inventor and industrialist Ernst Werner von Siemens. An older, more whimsical name for the same unit is the 'mho', which is 'ohm' spelled backwards, graphically illustrating its inverse relationship with the unit of resistance, the Ohm. A conductor has a conductance of one Siemens if a potential difference of one volt across it results in a current of one Ampere. Understanding conductance is essential for electrical engineers and physicists when analyzing circuit behavior, characterizing materials, and designing electronic components where facilitating current flow, rather than resisting it, is the primary goal.
G = 1 / R.I = GV. This shows that for a given voltage, the current is directly proportional to the conductance.G_total = G₁ + G₂ + G₃ + .... This is often simpler than calculating the total resistance using the formula 1/R_total = 1/R₁ + 1/R₂ + ...G = σ * (A / L), where 'A' is the cross-sectional area and 'L' is the length of the conductor.Conductance (G) is the direct mathematical inverse of resistance (R). The formula is G = 1/R. A highly resistive material will have very low conductance, and a highly conductive material will have very low resistance.
Yes, they are two different names for the exact same unit of electrical conductance. The Siemens (S) is the official SI unit, while the Mho (℧) is an older, deprecated name. 1 S = 1 ℧.
Conductance is particularly useful when analyzing parallel circuits. In a parallel circuit, it is easier to add the conductances of the components to find the total conductance, whereas calculating total resistance requires summing the reciprocals. It's also conceptually useful when discussing how well a material conducts electricity, rather than how much it resists it.
Conductivity is an *intrinsic* property of a material itself (like copper's inherent ability to conduct). Conductance is an *extrinsic* property of a specific object (like a particular copper wire) that depends on both the material's conductivity and the object's physical dimensions (its length and cross-sectional area).
No, for all passive materials and components, electrical resistance is a positive quantity, and therefore conductance, being its reciprocal, is also always positive.
Ernst Werner von Siemens was a 19th-century German electrical engineer, inventor, and industrialist. He was a pioneer in the telegraph industry and founded the company Siemens AG. The SI unit of conductance is named in his honor for his contributions to electrical science and technology.