JEE PYQ: Current Electricity Question 17
Question 17 - 2020 (02 Sep 2020 Shift 1)
Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity $\rho_C$, $\rho_T$, $\rho_M$ and $\rho_A$ respectively. Then:
(1) $\rho_C > \rho_A > \rho_T$
(2) $\rho_M > \rho_A > \rho_C$
(3) $\rho_A > \rho_T > \rho_C$
(4) $\rho_A > \rho_M > \rho_C$
Show Answer
Answer: (2)
Solution
$\rho_M = 98 \times 10^{-8}$, $\rho_A = 2.65 \times 10^{-8}$, $\rho_C = 1.724 \times 10^{-8}$, $\rho_T = 5.65 \times 10^{-8}$. So $\rho_M > \rho_T > \rho_A > \rho_C$.
BETA
