resistance of given wire of length 'l' is 4 ohm. The wire is stretched uniformly such that it's length becomes 3l. Find the new resistance of the stretched wire.
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Answer:resistance will still be the same
Explanation:the wire is streched,hence if the length of the wire increases then the area of crossection of the wire will uniformly reduce with the increase in length ,hence the resistance will still be the same
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