KCET2025PhysicsCurrent Electricity
The range of electrical conductivity ( ) and resistivity ( ) for metals, among the following, is
Options
- Aaligned & 10⁻⁵-10⁻⁶ ~m & 10^5-10⁻⁶ Sm ⁻¹ aligned
- Baligned & 10¹¹-10¹⁹ ~m & 10⁻¹¹-10⁻¹⁹ Sm ⁻¹ aligned
- Caligned & 10^2-10^8 ~m & 10⁻²-10⁻⁸ Sm ⁻¹ aligned
- Daligned & 10⁻²-10⁻⁸ ~m & 10^2-10^8 Sm ⁻¹ aligned
Correct answer
D. aligned & 10⁻²-10⁻⁸ ~m & 10^2-10^8 Sm ⁻¹ aligned
Step-by-step solution
The electrical conductivity (( ) ) for metals typically ranges from (10^2 ) to (10^8 ⁻¹ ~m ⁻¹ ) and the resistivity ( ( )) is in the range of (10⁻² ) to (10^8 ) m.