Question

Using `mass (M), "length"(L) , time (T)` and current` (A) `as fundamental quantites the demension of permeability is
A. `[M^(-1)LT^(-2)A]`
B. `[ML^(-2)T^(-2)A^(-1)]`
C. `[MLT^(-2)A^(-2)]`
D. `[MLT^(-1)A^(-1)]`

Answer 1

Correct Answer - C
` B = (mu_(0))/(2 pi) (i)/(r) `
but ` B = (F)/(il) (F= ilB)`:.
`(F)/(il) = (mu_(0))/(2 pi ) (i)/(r) `
` [mu_(0)] = [(F)/(i^(2))]`