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3. current electricity — Physics STD 12 Science — Question

CBSE BoardEnglish MediumSTD 12 SciencePhysics3. current electricity1 Mark
MCQ
Consider four conducting materials copper, tungsten, mercury and aluminium with resistivity $\rho_{ C }, \rho_{ T }, \rho_{ M }$ and $\rho_{ A }$ espectively Then:
  • A
    $\rho_{ A }>\rho_{ T }>\rho_{ C }$
  • B
    $\rho_{ C }>\rho_{ A }>\rho_{ T }$
  • C
    $\rho_{A}>\rho_{M}>\rho_{C}$
  • ✓
    $\rho_{ M }>\rho_{ A }>\rho_{ C }$
✓

Answer

Correct option: D.
$\rho_{ M }>\rho_{ A }>\rho_{ C }$
d
$\rho_{ M }>\rho_{ A }>\rho_{ C }$

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