Answers

2015-07-04T20:46:11+05:30
The resistance will be decreased.As larger the area, lesser the resistance.
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2015-07-04T21:34:12+05:30
The diameter becomes double. This means radius also gets double. So, the area of cross section becomes 4times. We know that resistance is inversely proportional to area of cross section . As the area of cross section becomes 4 times, the resistance would be ¼times
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