The dimensions of

PHYSICS · Single correct · A Level · Physics · Measurements and their errors · Measurements and their errors

Problem

The dimensions of

\frac{B^2}{2\mu_0}

, where

B

is magnetic field and

\mu_0

is the magnetic permeability of vacuum, is: (1)

MLT^{-2}

(2)

ML^2T^{-1}

(3)

ML^2T^{-2}

(4)

ML^{-1}T^{-2}