12. The dimension of εo _______ a) [M-1L-3T4I2] b) [M-1L-3T4I4] c) [M-1L-3T2I2] d) [M1L-3T4I2]
Answer: a Explanation: εo is the absolute permittivity of air medium and has value 8.854*10-12C2N-1m-2. Its dimension is [M-1L-3T4I2]. The permittivity of a medium is the product of this term with the dielectric constant or relative permittivity of that medium.
