Resistance of Long Wires
CMAT 2018 · General Knowledge · Easy · General Knowledge
Which of the following is true for wires of the same material and diameter?
- A.
As compared to short wires, long wires have more resistance.
- B.
As compared to short wires, long wires have no resistance.
- C.
As compared to short wires, long wires have less resistance.
- D.
As compared to short wires, long wires have same resistance.
Answer
A
Explanation
Resistance . For the same material and diameter, resistance is directly proportional to length . Thus, longer wires have more resistance.
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