The SI unit of resistivity is
Correct answer: A. Ohm-m
- A. Ohm-m
- B. Ohm-m2
- C. Ohm-m3
- D. Ohm
Explanation
Resistivity is a measure of how strongly a material opposes the flow of electric current. It quantifies the resistance of a material per unit length. The SI unit of resistivity is ohm-meter (Ω·m), representing the resistance between opposite faces of a 1-meter cube of the material.
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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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