If a conductor is twice as long, what happens to its resistance?

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Multiple Choice

If a conductor is twice as long, what happens to its resistance?

Explanation:
Resistance in a conductor is directly proportional to its length when the material, cross-sectional area, and temperature stay the same. The formula R = ρL/A shows this relationship: if you double the length L, and keep resistivity ρ and area A constant, the resistance doubles. So when the conductor is twice as long, its resistance becomes twice its original value. It wouldn’t stay the same or halve; it would only quadruple if the length were four times as long.

Resistance in a conductor is directly proportional to its length when the material, cross-sectional area, and temperature stay the same. The formula R = ρL/A shows this relationship: if you double the length L, and keep resistivity ρ and area A constant, the resistance doubles. So when the conductor is twice as long, its resistance becomes twice its original value. It wouldn’t stay the same or halve; it would only quadruple if the length were four times as long.

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