Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
If a capacitor is driven with a time-varying voltage that changes rapidly enough, at some frequency the polarization of the dielectric cannot follow the voltage. As an example of the origin of this mechanism, the internal microscopic dipoles contributing to the dielectric constant cannot move instantly, and so as frequency of an applied alternating voltage increases, the dipole response is limited and the dielectric constant diminishes. A changing dielectric constant with frequency is referred to as dielectric dispersion, and is governed by dielectric relaxation processes, such as Debye relaxation. Under transient conditions, the displacement field can be expressed as (see electric susceptibility):
What type of dipoles which add to the dielectric constant cannot move instantly if a slowly changing time varying voltage is driving the capacitor?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Bipolar transistors are so named because they conduct by using both majority and minority carriers. The bipolar junction transistor, the first type of transistor to be mass-produced, is a combination of two junction diodes, and is formed of either a thin layer of p-type semiconductor sandwiched between two n-type semiconductors (an npn transistor), or a thin layer of n-type semiconductor sandwiched between two p-type semiconductors (a pnp transistor). This construction produces two pn junctions: a baseemitter junction and a basecollector junction, separated by a thin region of semiconductor known as the base region (two junction diodes wired together without sharing an intervening semiconducting region will not make a transistor).
How are bipolar transistors mass produced?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
Catholicism arrived 400 years ago in the province and Protestantism 150 years ago. Zhejiang is one of the provinces of China with the largest concentrations of Protestants, especially notable in the city of Wenzhou. In 1999 Zhejiang's Protestant population comprised 2.8% of the provincial population, a small percentage but higher than the national average.
Where are Protestants not notable in Zhejiang?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
In 2008, Forbes magazine named Oklahoma City the most "recession proof city in America". The magazine reported that the city had falling unemployment, one of the strongest housing markets in the country and solid growth in energy, agriculture and manufacturing. However, during the early 1980s, Oklahoma City had one of the worst job and housing markets due to the bankruptcy of Penn Square Bank in 1982 and then the post-1985 crash in oil prices.[citation needed]
What year did forbes list Oklahoma city as "recession proof".
A:
2008