A) \[[M{{T}^{-1}}{{A}^{-1}}]\]
B) \[[M{{T}^{-2}}{{A}^{-1}}]\]
C) \[[ML{{A}^{-2}}]\]
D) \[[M{{T}^{-2}}A]\]
Correct Answer: B
Solution :
Magnetic force on a charged straight conductor is given by \[F=Bill\] \[\Rightarrow \]B = magnetic induction \[=\frac{F}{il}\] \[\therefore \] \[[B]=\frac{[F]}{[il]}=\frac{[ML{{T}^{-2}}]}{[A][L]}\] \[=[M{{T}^{-2}}{{A}^{-1}}]\]
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