Dimensions of resistivity in terms of M,,L,,T and Q where Q stands for dimensions of charge, is

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1.Units, Dimensions and Measurement

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The dimensions of resistivity in terms of $M,\,L,\,T$ and $Q$ where $Q$ stands for the dimensions of charge, is

A$M{L^3}{T^{ - 1}}{Q^{ - 2}}$

B$M{L^3}{T^{ - 2}}{Q^{ - 1}}$

C$M{L^2}{T^{ - 1}}{Q^{ - 1}}$

D$ML{T^{ - 1}}{Q^{ - 1}}$

Solution

(a) $\rho = \frac{{RA}}{l}$
i.e. dimension of resistivity is $[M{L^3}{T^{ – 1}}{Q^{ – 2}}]$

Standard 11

Physics

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