The reciprocal of resistivity is
Correct answer: A. Conductivity
- A. Conductivity
- B. Permitivity
- C. Resistance
- D. Voltage
Explanation
Conductivity is the reciprocal of resistivity. It measures how easily a material allows the flow of electric current. Conductivity is denoted by the symbol σ (sigma) and is measured in siemens per meter (S/m) or mho per meter (℧/m). Higher conductivity indicates better electrical conduction properties of the material.
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About Current Electricity
Steady current relates charge flow to potential difference, resistance and resistivity, including how temperature changes a conductor's resistance. Sources with internal resistance have terminal voltage below their emf when delivering current, and maximum power output occurs under a specific load condition rather than at zero resistance.
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