The dimensions of `(1)/(2) in_(0) E^(2)`, where `in_0` is permittivity of free space and E is electric field, is :-

Options

A. `MLT^(1)`
B. `ML^2T^(-2)`
C. `ML^(-1)T^(-2)`
D. `ML^(2)T^(-1)`

Answer

C

Explanation

Energy density `=1/2 epsilon_(0)E^2 = ("Energy")/("Volume")`
`([ML^2T^(-2)])/([L^3])=[ML^(-1)T^(-2)]`