Let I = current through a conductor, R = its resistance and V = potential difference across its ends. According to Ohm's law, product of two of these quantities equals the third. Obtain Ohm's law from dimensional analysis. Dimensional formulae for R and V are ML2I−2T−3 and ML2T−3I−1 respectively.

Let I = current through a conductor, R = its resistance and V = potent

1.	Let I = current through a conductor, R = its resistance and V = potential difference across its ends. According to Ohm's law, product of two of these quantities equals the third. Obtain Ohm's law from dimensional analysis. Dimensional formulae for R and V are ML2I−2T−3 and ML2T−3I−1 respectively.
Answer» Let I = current through a conductor, R = its resistance and V = potential difference across its ends. According to Ohm's law, product of two of these quantities equals the third. Obtain Ohm's law from dimensional analysis. Dimensional formulae for R and V are $M L^{2} I^{- 2} T^{- 3}$ and $M L^{2} T^{- 3} I^{- 1}$ respectively.

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