please answer it ............
A given length of wire is doubled of itself and this process is repeated once again .by what factor does the resistance of wire changes
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On doing as stated if we assume that area of cross section remains same that is additional wire is placed then the resistance will became 4 times..
but if the same wire is stretched then length will become 4 time but area of cross section will become 1/4 time{volume remains constant}and hence resistance will become 16 times
but if the same wire is stretched then length will become 4 time but area of cross section will become 1/4 time{volume remains constant}and hence resistance will become 16 times
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Answer:
The length of wire is doubled on itself and so the area get reduced to half. The resultant resistance will be 4 times.
The process is repeated and therefore the resistance will increase by 4 times. The total resistance will be increased to 16 times.
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