A wire has a resistance R . what will be its resistance if (a) it is doubled on itself (b) it is stretched so that (i) its length is doubled and ( ii) its radius is halved.

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A wire has a resistance R . what will be its resistance if (a) it is doubled on itself (b) it is stretched so that (i) its length is doubled and ( ii) its radius is halved.
10
Nov
A wire has a resistance R . what will be its resistance if (a) it is doubled on itself (b) it is stretched so that (i) its length is doubled and ( ii) its radius is halved. A wire has a resistance R . what will be its resistance if (a) it is doubled on [...]
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