An AL wire of resistance 2 ohm is stretched to seven times ots length what is its new resistance.
please answer in detail
thank you for your help in advance....
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Answer:
As, R = p l/ A
Where, R = Resistance
p = Resistivity
l = Length
A = Area and p & A being constant.
R is directly proportional to l
Thus, new resistance R' = 2ohm× 7
R' = 14 ohm
hope this will help you
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