The following formula can be used to determine the resistance of a length of conductor. R pl/A In the formula, the symbol p stands for the:
Correct answer: C. Resistivity of the material in units of ohm meters
- A. Cross-sectional area of the conductor in m2
- B. Product of the length of the conductor in meters
- C. Resistivity of the material in units of ohm meters
- D. Resistance of the conductor in units of ohms per meter
Explanation
The symbol "p" in the formula represents the resistivity of the material in units of ohm meters.
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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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