Question

nollage? (c) A coil of wire \( 4 \mathrm{~m} \) long has a resistance of \( 20 \Omega \). If its resistivity is \( 108 \times 10-8 \Omega \mathrm{m} \), find its area of cross-section ERROR ANALYSIS: Calculate the percentage error in the resistivity of \( \mathrm{Cu} \) and \( \mathrm{Al} \) if the theoretical values are 1.79 \( \times 10^{-8} \Omega \) and \( 2.98 \times 10^{-8} \Omega \)

          nollage?
(c) A coil of wire \( 4 \mathrm{~m} \) long has a resistance of \( 20 \Omega \). If its resistivity is \( 108 \times 10-8 \Omega \mathrm{m} \), find its area of cross-section
ERROR ANALYSIS:
Calculate the percentage error in the resistivity of \( \mathrm{Cu} \) and \( \mathrm{Al} \) if the theoretical values are 1.79 \( \times 10^{-8} \Omega \) and \( 2.98 \times 10^{-8} \Omega \)