Q. The dimensional formula for the magnetic field is
A) $\left\lbrack {MT}^{- 2}A^{- 1} \right\rbrack$
B) $\left\lbrack {ML}^{2}T^{- 1}A^{- 2} \right\rbrack$
C) $\left\lbrack {MT}^{- 2}A^{- 2} \right\rbrack$
D) $\left\lbrack {MT}^{- 1}A^{- 2} \right\rbrack$
Explanation
Magnetic field $= \frac{Force}{Charge\ \times \ velocity}$ $\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ = \frac{\left\lbrack {MLT}^{- 2} \right\rbrack}{\lbrack AT\rbrack\left\lbrack {LT}^{- 1} \right\rbrack} = \left\lbrack {MA}^{- 1}T^{- 2} \right\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.