Question

The dimension of B²/2µ₀, where B is magnetic field and µ₀ is the magnetic permeability of vacuum, is:

(1) ML^–1T^–2

(2) ML²T^–1

(3) MLT^–2

(4) ML²T^–2

Answer 1

Answer is (1) ML^–1 T ^–2

energy density in magnetic field = B²/2μ0

Answer 2

Answer is (1) ML^–1T^–2

Magnetic energy stored per unit volume is B²/2µ₀. Dimension is ML^–1T^–2