MediumPhysicsUnits and Measurements
+4 / -1
The dimensions of 1/2 ε₀E² (ε₀ is permittivity of free space, E is electric field) are
A
[MLT−1]
B
[ML²T−3]
C
[ML−1T−2]
D
[ML−2T−1]
Explanation
Energy density of an electric field u = 1/2 ε₀E². Energy density = energy/volume = ML²T⁻² / L³ = ML⁻¹T⁻².
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