Question

In what conditions resistance of a metallic wire becomes 8 times

Answer 1

Explanation:

In what conditions resistance of a metallic wire becomes 8 times......

By stretching it 2.38 times...

Answer 2

Explanation:

Condition on which Reaistance of wire depend :

The resistance of wire is directly proportional to the length of conductor means if you increase or decrease the length of conductor then the resistance of conductor also increase or decrease.

$r \: \alpha \: l$

" If the Volume is conserved then "

if we increase the length of wire double its original length the then the new resistance increase 4 times the previous resistance.

Similarly if length of wire increase three time the original length of wire then resistance increase by nine times the previous resistance .

If you increase the length of wire nearly 2.4 times then the new resistance increase by eight times the previous resistance ...

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