Conductor Resistance and Proportionality
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Questions and Answers

What factors does the resistance of a conductor depend on?

Length, area of cross-section, and the nature of its material

What is the formula that combines the relationship between resistance, length, and area of cross-section?

R = ρ l A

What is the relationship between the resistance of a uniform metallic conductor, its length, and area of cross-section?

Resistance is directly proportional to length (l) and inversely proportional to the area of cross-section (A).

What is the resistivity range for metals and alloys?

<p>10^(-8) Ω m to 10^(-6) Ω m</p> Signup and view all the answers

What is the SI unit of resistivity?

<p>Ω m</p> Signup and view all the answers

Why are alloys commonly used in electrical heating devices?

<p>Alloys do not oxidise readily at high temperatures.</p> Signup and view all the answers

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