An Air-Filled Parallel-Plate Capacitor Is Connected to a Battery and Allowed

question 19

Multiple Choice

An air-filled parallel-plate capacitor is connected to a battery and allowed to charge up.Now a slab of dielectric material is placed between the plates of the capacitor while the capacitor is still connected to the battery.After this is done,we find that

• A) the energy stored in the capacitor had decreased.
• B) the voltage across the capacitor had increased.
• C) the charge on the capacitor had increased.
• D) the charge on the capacitor had not changed.
• E) None of these choices are true.

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Definitions:

Sex Hormones

Chemical substances that serve as messengers affecting the function of specific target organs responsible for secondary sex characteristics and reproductive activity.

Steroids

A class of lipids that have a basic structure consisting of four linked carbon rings, and include many hormones, alkaloids, and vitamins.

Terpenes

A large and diverse class of organic compounds, produced primarily by plants, that are the major components of essential oils.

Isoprene

A common organic compound with the formula C5H8, used as the monomer unit in the natural synthesis of rubber and other terpenes.