Exam-style question
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How does the length of a wire affect its resistance?.
- A.Resistance increases with length
- B.Resistance decreases with length
- C.Resistance remains constant regardless of length
- D.Resistance is independent of length but depends on temperature
Model answer
What a good answer should say
- Resistance increases with length
Explanation
Why this works
The resistance of a wire is directly proportional to its length. As the length increases, the number of collisions between charge carriers and the lattice structure increases, leading to higher resistance.
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