A test charge is moved from a lower potential point to a higher potential point. The potential energy of the test charge will:
Correct answer: B. Increase
- A. Remain the same
- B. Increase
- C. Decrease
- D. Become zero
Explanation
The change in potential energy is ΔU = qΔV. If a positive test charge (q>0) is moved to a higher potential (ΔV>0), the potential energy will increase. Work must be done against the electric field to move the charge.
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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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