Question

The dimensional formula of magnetic flux is

• A. $\left[ M ^{1} L ^{2} T ^{-1} A ^{-2}\right]$
• B. $\left[ M ^{1} L ^{2} T ^{-2} A ^{-1}\right]$
• C. $\left[ M ^{1} L ^{2} T ^{-1} A ^{-1}\right]$
• D. $\left[ M ^{1} L ^{0} T ^{-2} A ^{-1}\right]$

Answer 1

Answer: (B)

Magnetic flux, $\phi = B. A =\frac{F}{I\lambda} A$
$=\frac{\left[M^{1}L^{+1}T^{-2}\right]L^{2}}{\left[A.L\right]} = \left[M^{1}L^{2}T^{-2}A^{-1}\right]$