A parallel plate capacitor has a capacitance C. If the distance between the plates is halved, what will the capacitance be?
Correct answer: D. 2 C
- A. 0.5 C
- B. 4 C
- C. 0.25 C
- D. 2 C
Explanation
The capacitance is inversely proportional to distance between the plates. Halving the distance would double the capacitance giving us 2C.
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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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