Equal but Opposite Charges Q Are Placed on the Square

question 4

Multiple Choice

Equal but opposite charges Q are placed on the square plates of an air-filled parallel-plate capacitor.The plates are then pulled apart to twice their original separation,which is small compared to the dimensions of the plates.Which of the following statements about this capacitor are true? (There may be more than one correct choice.)

• A) The energy stored in the capacitor has doubled.
• B) The energy density in the capacitor has increased.
• C) The electric field between the plates has increased.
• D) The potential difference across the plates has doubled.
• E) The capacitance has doubled.

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Definitions:

Nonaromatic

Refers to organic compounds that do not exhibit the stability associated with aromatic rings, often lacking delocalized pi-electron systems.

[10]annulene

A ten carbon ring compound with alternating single and double bonds, known for its unusual properties and contribution to the study of aromaticity.

Aromatic

A class of cyclic, planar compounds with electrons delocalized over the entire structure, providing unique stability, examples include benzene.

Marginal Probability

The probability of an event occurring, marginalizing over the possibilities of any other related events.