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Electric field in a region is given by $\vec{E} = A x \hat{i} + B y \hat{j}$, where $A = 10 \text{ V/m}^2$ and $B = 5 \text{ V/m}^2$. If the electric potential at a point $(10, 20)$ is $500 \text{ V}$, then the electric potential at origin is ________ $\text{V}$. - FirstInTest | FirstInTest