Q 12-01-070JEE MainJEE Main 2023 (30 Jan, Shift 1)Easy
Electric field in a certain region is given by $\vec E=\dfrac{A}{x^2}\hat i+\dfrac{B}{y^3}\hat j$. The SI units of $A$ and $B$ are
Answer: (B) $\text{N m}^2\ \text{C}^{-1};\ \text{N m}^3\ \text{C}^{-1}$
$E$ is in $\text{N C}^{-1}$.
$A=Ex^2\Rightarrow\text{N m}^2\ \text{C}^{-1}$; $\ B=Ey^3\Rightarrow\text{N m}^3\ \text{C}^{-1}$.
Solution by Sreeraj P, M.Sc Physics