Home › MCQs › NEET Physics › Question #7224
Back to Questions
NEET Physics QUESTION #7224
Question 1

The dimension of magnetic permeability $\mu_0$ is:

  • $MLT^{-2}A^{-2}$✔️
  • $ML^{-1}T^{-2}A^{-2}$
  • $ML^{-2}T^{-2}A^2$
  • $MLT^{-3}A^{-2}$
Correct Answer Explanation

From the Biot-Savart law or the force between parallel conductors:

$F = \dfrac{\mu_0 I_1 I_2 L}{2\pi r}$

$[\mu_0] = \dfrac{[F][r]}{[I]^2[L]} = \dfrac{MLT^{-2} \cdot L}{A^2 \cdot L} = MLT^{-2}A^{-2}$