COMEDK2019PhysicsUnits and Dimensions
SI unit of permittivity is
Options
- AC ² ~m ² ~N ⁻¹
- BC ⁻¹ ~m ² ~N ⁻²
- CC ² ~m ² ~N ²
- DC ² ~m ⁻² ~N ⁻¹
Correct answer
D. C ² ~m ⁻² ~N ⁻¹
Step-by-step solution
From Coulomb's law, we know aligned & F= 1 4 ₀ q₁ q₂ r² & N = 1 ₀ C ² ~m ² & ₀= C ² ~m ² ~N ₀ &= C ² ~m ⁻² ~N ⁻¹ aligned