The dimensional formula of \(\frac{1}{2}{\epsilon }_{0}{E}^{2}\left({\epsilon }_{0}=\right.\) permittivity of vacuum and…

The dimensional formula of \(\frac{1}{2}{\epsilon }_{0}{E}^{2}\left({\epsilon }_{0}=\right.\) permittivity of vacuum and E = electric field) is \({M}^{a}{L}^{b}{T}^{c}.\) The value of 2 a - b + c =_________

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