Identify the correct statements :
A. Electrostatic field lines form closed loops.
B. The electric field lines point radially outward when charge is greater than zero.
C. The Gauss - Law is valid only for inverse-square force.
D. The work done in moving a charged particle in a static electric field around a closed path is zero.
E. The motion of a particle under Coulomb's force must take place in a plane.
Choose the **correct** answer from the options given below :
Answer: (C) B, C, D, E Only
A: Electrostatic field lines start on positive and end on negative charges; they never form closed loops ✗
B: For a positive point charge the field lines point radially outward ✓
C: Gauss's law in the form $\oint\vec E\cdot d\vec A = q/\varepsilon_0$ relies on the $1/r^2$ dependence of the field ✓
D: The electrostatic field is conservative, so the work around a closed path is zero ✓
E: The Coulomb force (due to a fixed charge) is central, so angular momentum about the charge is conserved and the motion stays in a fixed plane ✓
So B, C, D, E only.
Solution by Sreeraj P, M.Sc Physics