The dimension formula of the magnetic field intensity B is ______ .

Options

A. `ML^(-2)A^(-1)`
B. `MT^(-2)A^(-1)`
C. `M^(2)TA^(-2)`
D. `M^(2)LT^(-2)A^(-1)`

Answer

B

Explanation

`F=BIlrArrB=F/(Il)`
`therefore` The dimension formula of,
`B=("(Dimenstion formula of F)")/("(Dimension formula of I)(Dimenstion formula of l)")`
`=(M^(1)L^(1)T^(-2))/(A^(1)L^(1))`
= `MT^(-2)A^(-1)`