3 capacitors with capacitance 5µF, 6µF and 7µF are arranged in series combination with a battery of 5V. Which capacitor has more potential difference across its plates?
Correct answer: A. 5µF capacitor
- A. 5µF capacitor
- B. 6µF capacitor
- C. 7µF capacitor
- D. Same potential difference across all
Explanation
In a series circuit, the charge (Q) is the same on all capacitors. The potential difference across a capacitor is given by V = Q/C. Since V is inversely proportional to C, the capacitor with the smallest capacitance (5µF) will have the largest potential difference across it.
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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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