A) \[M{{L}^{2}}{{T}^{-2}}{{A}^{2}}\]
B) \[M{{L}^{2}}{{T}^{-2}}{{A}^{-2}}\]
C) \[M{{L}^{2}}{{T}^{-2}}{{A}^{2}}\]
D) \[M{{L}^{2}}{{T}^{-2}}{{A}^{-2}}\]
Correct Answer: B
Solution :
From Ohm's law, resistance R is given by \[\text{R}\,\text{=}\,\frac{\text{Potential}\,\text{Difference}}{\text{Current}}\] \[\therefore \] Dimensions of \[R=\frac{M{{L}^{2}}{{T}^{-3}}{{A}^{-1}}}{A}=M{{L}^{2}}{{T}^{-3}}{{A}^{-2}}\] Hence, the correction option is (b).
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