A wire of resistance 20 ohm is cut into 4 equal parts. The resistance of each part is
Options
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A.
5 ohm
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B.
10 ohm
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C.
20 ohm
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D.
80 ohm
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E.
None of the above
Correct Answer (Detailed Explanation is Below)
A.
5 ohm
Detailed Explanation
For a uniform wire, resistance is directly proportional to length. Cutting it into 4 equal parts makes the resistance of each part 20/4 = 5 ohm.