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NEET Physics QUESTION #7233
Question 1

The dimensional formula of magnetic field $B$ is:

  • $M^1L^2T^{-3}A^{-1}$
  • $M^1L^{-1}T^{-2}A^{-1}$
  • $M^1L^0T^{-2}A^{-1}$✔️
  • $M^1L^1T^{-2}A^{-1}$
Correct Answer Explanation

From Lorentz force: $F = qvB$

$[B] = \dfrac{[F]}{[q][v]} = \dfrac{MLT^{-2}}{AT \cdot LT^{-1}} = \dfrac{MLT^{-2}}{AL} = MT^{-2}A^{-1} = M^1L^0T^{-2}A^{-1}$