The dimension of potential difference × length are :

ML3T-3I-1 MLT-2I-1 ML2T-2I MLT2I

ML3T-3I-1

V = $\frac{\text { work }}{\text { charge }} \times$ length $=\frac{ML^2 T^{-2}}{I \times T} \times L$ = ML3T-3I-1