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:

Sodium Chloride

A chemical compound commonly known as table salt, essential for various bodily functions, including maintaining fluid balance.

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Positively charged ions of hydrogen, which play a crucial role in acidity, pH levels, and various biochemical reactions.

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A measure of how well the kidneys filter waste and excess fluid from the blood.

Efferent Arteriole

The small blood vessel that carries blood away from the glomerulus of the kidney after filtration.