Two aluminum wires have the same resistance. Part A If one has twice the length

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Two aluminum wires have the same resistance. Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again Two aluminum wires have the same resistance. Two aluminum wires have the same resistance. Two aluminum wires have the same resistance. Two aluminum wires have the same resistance. Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again dlong dshort = dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again Incorrect; One attempt remaining; Try Again Incorrect; One attempt remaining; Try Again Two aluminum wires have the same resistance. Part A If one has twice the length of the other, what is the ratio of the diameter of the longer wire to the diameter of the shorter wire? dlong dshort = SubmitMy AnswersGive Up Incorrect; One attempt remaining; Try Again

Explanation / Answer

s their relative resistance is same.....

we get ... R(1)A(1)/L(1) = R(2)A(2)/L(2)

but R(1)=R(2) and L(1)=2L(2)

so

A(1)=2A(2) , where A={(pi)diameter^2}/4

so

D(1):D(2)=1.4142 : 1 (ans)

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