Siemens (S), the unit of electrical conductance, is calculated as the reciprocal of resistance (measured in ohms) or directly using the formula: G = I/V, where 'I' is the current in amperes and 'V' is the voltage in volts.
Here's a breakdown:
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Definition: Siemens (symbol: S) measures how easily electricity flows through a material. It's the SI unit of electrical conductance.
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Relationship to Resistance: Conductance (G) is the inverse of resistance (R). Therefore:
- G = 1/R
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Direct Calculation using Current and Voltage: The most direct way to calculate Siemens is using Ohm's Law:
- Formula: G = I/V
- Where:
- G = Conductance in Siemens (S)
- I = Current in Amperes (A)
- V = Voltage in Volts (V)
- Where:
- Formula: G = I/V
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Example: If a circuit has a voltage of 12V and a current of 2A flowing through it, the conductance is:
- G = 2A / 12V = 0.1667 S
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Units: Siemens is equivalent to amps per volt (A/V) or inverse ohms (Ω-1), which is sometimes referred to as mho (℧).
In summary, to calculate Siemens, you can either find the reciprocal of the resistance or divide the current flowing through an object by the voltage across it.
