The resistance of a uniform metallic conductor is __________.
inversely proportional to its area.
Concept:
- Resistance: The property of any conductor that opposes the flow of electric current through it is called resistance.
- It is denoted by R and the SI unit is ohm (Ω).
Resistance is given by:
R = ρL/A
where ρ is resistivity, L is length, and A is the area of cross-section.
Explanation:
From the formula of resistance given above:
- The resistance of a uniform metallic conductor is inversely proportional to its area. So option 3 is correct.
- ρ depends on the material and temperature.
- The resistance of a uniform metallic conductor also depends on the length, area, and temperature.
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