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A ductile metal wire has resistance R. Part A What will be the resistance of this wire in terms of R if it is stretched to three times its original length, assuming that the density and resistivity of the material do not change when the wire is stretched. (Hint: The amount of metal does not change, so stretching out the wire will affect its cross-sectional area. ) Express your answer in terms of R.R′ = R

A ductile metal wire has resistance R. Part A What will be the resistance of this wire in terms of R if it is stretched to three times its original length, assuming that the density and resistivity of the material do not change when the wire is stretched. (Hint: The amount of metal does not change, so stretching out the wire will affect its cross-sectional area. ) Express your answer in terms of R.R′ = R

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A ductile metal wire has resistance R . Part A What will be the resistance of this wire in terms of R if it is stretched to three times its original length, assuming that the density and resistivity of the material do not change when the wire is stretched. (Hint: The amount of metal does not change, so stretching out the wire will affect its cross-sectional area.) Express your answer in terms of R .
◻ ◻ A Σ ϕ R ′ = R

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