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Question
If the length of a wire is doubled by taking more of wire, what happens to its resistance?
If the length of a wire is doubled by taking more of wire, what happens to its resistance?
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Solution
Resistance is directly proportional to the length of the wire, and inversely proportional to the cross sectional area of the wire.
If the length of a wire is doubled by taking more of wire, the resistance is doubled,note that the area of cross section is same.
If the length of a wire is doubled by taking more of wire, the resistance is doubled,note that the area of cross section is same.
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