Here's a short story:

A capacitor (originally known as a condenser) is a passive two-terminal electrical component used to store electrical energy temporarily in an electric field. The forms of practical capacitors vary widely, but all contain at least two electrical conductors (plates) separated by a dielectric (i.e. an insulator that can store energy by becoming polarized). The conductors can be thin films, foils or sintered beads of metal or conductive electrolyte, etc. The nonconducting dielectric acts to increase the capacitor's charge capacity. Materials commonly used as dielectrics include glass, ceramic, plastic film, air, vacuum, paper, mica, and oxide layers. Capacitors are widely used as parts of electrical circuits in many common electrical devices. Unlike a resistor, an ideal capacitor does not dissipate energy. Instead, a capacitor stores energy in the form of an electrostatic field between its plates. 

When there is a potential difference across the conductors (e.g., when a capacitor is attached across a battery), an electric field develops across the dielectric, causing positive charge +Q to collect on one plate and negative charge −Q to collect on the other plate. If a battery has been attached to a capacitor for a sufficient amount of time, no current can flow through the capacitor. However, if a time-varying voltage is applied across the leads of the capacitor, a displacement current can flow. (End of story)

Provide your best guess for the following question. Give ONLY the guess, no other words or explanation.

For example:

Guess: <most likely guess, as short as possible; not a complete sentence, just the guess!>

Here are a few examples of questions and answers:

Question: What is a capacitor?
Guess: a passive two-terminal electrical component used to store electrical energy temporarily in an electric field.

Question: Are there any other names for it?
Guess: a condenser

Question: What's the difference between it and a resistor?
Guess: Unlike a resistor, an ideal capacitor does not dissipate energy.

Question: Does it do something else instead?
Guess: It stores energy in the form of an electrostatic field between its plates.

Question: How many plates does a capacitor have?
Guess: at least two

Question: Are they kept apart by something?
Guess: a dielectric

Question: What's that?
Guess: an insulator that can store energy by becoming polarized

Question: What kinds of things can a plate be?
Guess: thin films, foils or sintered beads of metal or conductive electrolyte, etc.

Question: What are dielectrics made of?
Guess: glass, ceramic, plastic film, air, vacuum, paper, mica, or oxide layers, among others.

Question: What are capacitors used for?
Guess: parts of electrical circuits in many common electrical devices.

Question: What is the dielectric for?
Guess: It acts to increase the capacitor's charge capacity.

Question: What happens if you attach a battery to a capacitor?
Guess: eventually, no current can flow through the capacitor.

Question: Is there a  way to avoid that?
Guess: a time-varying voltage applied across the leads of the capacitor

Now answer the following question in the same format.

Question: What happens then?

a displacement current can flow.