The dimension of 12ϵoE2 permittivity of free space and E:Intensity of electric field) is
Explanation
Force=P^xV^yT^z
[MLT^{-2}]=[MLT^{-2}L^{-2}]^x[LT^{-1}]^y[T]^z
Comparing the dimensions on both side, we get,
x=1, y=2, z=2
So, Force=[P^1V^2T^2]
Pressure (P) = \dfrac{Force }{ Area} . . . . . (1)
Since, Force = Mass \times Acceleration
And, Acceleration = \dfrac{Velocity}{Time} =\dfrac{[LT^{-1}]}{[T]}=[LT^{-2}]
\therefore The dimensional formula of force =[M][LT^{-2}]=[MLT^{-2}] . . . . (2)
The dimensional formula of area is [M^0L^2T^0] . . . . (3)
On substituting equation (2) and (3) in equation (1) we get,
Pressure (P) = \dfrac{Force }{ Area}
Or,
P=\dfrac{[MLT^{-2}]}{[L^2]}=ML^{-1}T^{-2}
Therefore, the pressure is dimensionally represented as [ML^{-1}T^{-2}]
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