Radial Outward Electric Field Lines for Positive Point Charge

Steps:

• Electric field lines originate from positive charges and extend to infinity or negative charges.
• For an isolated point charge, lines radiate symmetrically outward in all directions.
• Lines are straight, perpendicular to equipotential surfaces, and spread out with increasing distance.
• No closed loops or inward directions occur in electrostatic fields.

Why B is correct:

• It shows lines emanating radially outward from the charge, matching the direction of $\vec{E} = \frac{kq}{r^2} \hat{r}$ for positive q per Coulomb's law.

Why the others are wrong:

• A: Lines point inward, indicating a negative charge.
• C: Features curved or looping lines, violating electrostatic field rules.
• D: Displays parallel lines, resembling a uniform field from an infinite plane.

Final answer: B