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Which of the following statement (s) is/...

Which of the following statement (s) is/are correct?

A

If the electric field due to a point charge varies as `r^-2.5` instead of `r^-2`, then the Gauss law will still be valid

B

The Gauss law can be used to calculate the field distribution around the electric dipole

C

If the electric field between two point charges is zero somewhere, then the sign of the two charges is the same

D

the work done by the external force in moving a unit positive charge from point A at potential `V_A` to point B at potential `V_B` is `(V_B - V_A)`

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