Verified Solution • 2025–26 Session moderate

QJEEM20Phd942: JEE Main 2020 Physics - Class 12 JEEM20Phd942 Solution: Consider four conducting materials copper, tungsten, mercury…

Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity ρ\rho C, ρ\rho T, ρ\rho M and ρ\rho A respectively. Then :

Multiple Choice Options

  • A ρ\rho C > ρ\rho A > ρ\rho T
  • B ρ\rho M > ρ\rho A > ρ\rho C
  • C ρ\rho A > ρ\rho T > ρ\rho C
  • D ρ\rho A > ρ\rho M > ρ\rho C

Step-by-Step Verified Solution

ρM = 98 × 10–8
ρA = 2.80 × 10–8
ρC = 1.72 × 10–8
ρT = 5.65 × 10–8

∴\therefore ρ\rho M > ρ\rho T > ρ\rho A > ρ\rho C

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