Question

Why we write this M^0 in dimensions , what does this represents.​

Answer 1

Answer:

Dimensions for μ0ε01 will be [M−1L−3T4I2]×[M1L1T−2I−2]1=[L2T−2]

Answer 2

Dimension formula is the expression for the unit of a physical quantity in terms of the fundamental quantities. The fundamental quantities are mass (M), Length (L) and time (T). A dimensional formula is expressed in terms of power of M, L and T. ... These will specify the nature of the unit and not its magnitude.