A wire of resistivity` rho symbol` is stretched to double of its length. Find its new resistance and resistivity.
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A wire of resistivity` rho symbol` is stretched to double of its length. Find its new resistance and resistivity.
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Answer:
since resitivity of any metal remain same so on extending its length its resistivity remains same although resistance is directly proptional to its length therfore on doubling the length resistance doubles
remember resitivity is constant and different for every metal
Explanation: