What is the resistance of a wire of length $5 \, m$ and resistivity $1.7 \times 10^{-8} \, \Omega \cdot m$,given the cross-sectional area is a hollow cylinder with outer radius $r_2 = 10 \, cm$ and thickness $5 \, mm$?

  • A
    $5.6 \times 10^{-5} \, \Omega$
  • B
    $2 \times 10^{-5} \, \Omega$
  • C
    $4 \times 10^{-5} \, \Omega$
  • D
    None of these

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