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Electrical Conductance Formula:
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Electrical conductance (G) is the measure of a material's ability to conduct electric current, while resistance (R) is the opposition to current flow. Conductance is the reciprocal of resistance, measured in siemens (S).
The calculator uses the fundamental electrical formula:
Where:
Explanation: This formula shows the inverse relationship between conductance and resistance - as resistance increases, conductance decreases, and vice versa.
Details: Understanding conductance is crucial for designing electrical circuits, selecting appropriate materials for conductors, and analyzing the efficiency of electrical systems in various applications.
Tips: Enter resistance value in ohms (Ω). The value must be greater than zero. The calculator will automatically compute the corresponding conductance in siemens (S).
Q1: What is the difference between conductance and conductivity?
A: Conductance (G) is the property of a specific object, while conductivity (σ) is an intrinsic property of a material independent of its dimensions.
Q2: What are typical conductance values for common materials?
A: Copper has high conductance (~58 MS/m), while insulators like rubber have very low conductance (~10⁻¹⁵ S/m).
Q3: How does temperature affect conductance?
A: For metals, conductance decreases with increasing temperature, while for semiconductors, it increases with temperature.
Q4: What is the relationship with Ohm's Law?
A: Conductance relates to Ohm's Law through the formula G = I/V, where I is current and V is voltage.
Q5: When is conductance more useful than resistance?
A: Conductance is particularly useful when analyzing parallel circuits, as conductances in parallel add directly, unlike resistances.