Electric field lines due to a positive charge are:
Correct answer: D. Radially away from the charge
- A. Always horizontal
- B. Always vertical
- C. Radially towards the charge
- D. Radially away from the charge
Explanation
Because positive charges repel each other, the electric field around an isolated positive charge is oriented 'radially outward'. When they are represented by lines of force, or field lines, electric fields are depicted as starting on positive charges and terminating on negative charges.
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Electrostatics describes forces between charges through Coulomb's law, electric fields and field intensity, then uses electric potential to measure energy per unit charge. Capacitors store charge and electrical energy, with capacitance depending on geometry and dielectric material, not simply on the amount of charge present.
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