COMEDK2023Evening ShiftPhysicsCurrent ElectricityActual
The SI unit of electrical conductivity is :
Options
- AS ~m ⁻¹
- B~m
- CS m
- D~m ⁻¹
Correct answer
A. S ~m ⁻¹
Step-by-step solution
Electrical conductivity, denoted by or , is defined as the reciprocal of electrical resistivity, . The SI unit of resistivity is m . Therefore, the SI unit of conductivity = 1 is 1 m = ⁻¹ m ⁻¹ . Since the SI unit of conductance ⁻¹ is Siemens (S), the unit of conductivity is S m ⁻¹ . Answer: S ~m ⁻¹