PHYSICS · Single correct · CBSE · Physics · Electrostatic Potential and Capacitance · Electrostatic Potential and Capacitance
Problem
Which of the following statements is correct?
(1) If the electric field due to a point charge varies as r−2.5 instead of r−2, then Gauss's law will still be valid.
(2) Gauss's law can be used to calculate the field distribution around an electric dipole.
(3) If the electric field between two point charges is zero somewhere, then the signs of the two charges are the same.
(4) The work done by an external force in moving a unit positive charge from point A at potential VA to point B at potential VB is VB−VA.