A test charge is moved from lower potential point to a higher potential point. The potential energy of test charge will:
Correct answer: B. Increase
- A. Remain the same
- B. Increase
- C. Decrease
- D. Become zero
Explanation
When a test charge is moved from a lower potential point to a higher potential point, work is done against the electric field. This work is stored as potential energy, thus increasing the potential energy of the test charge. Therefore, Option B is correct. Option A is incorrect because potential energy does change. Option C is incorrect because the potential energy does not decrease; it increases. Option D is incorrect because the potential energy does not become zero due to the work done against the electric field.
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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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