Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
FETs are further divided into depletion-mode and enhancement-mode types, depending on whether the channel is turned on or off with zero gate-to-source voltage. For enhancement mode, the channel is off at zero bias, and a gate potential can "enhance" the conduction. For the depletion mode, the channel is on at zero bias, and a gate potential (of the opposite polarity) can "deplete" the channel, reducing conduction. For either mode, a more positive gate voltage corresponds to a higher current for n-channel devices and a lower current for p-channel devices. Nearly all JFETs are depletion-mode because the diode junctions would forward bias and conduct if they were enhancement-mode devices; most IGFETs are enhancement-mode types.
What controls the gate potential of a FET?
A: unanswerable

Q: What is a question about this article? If the question is unanswerable, say "unanswerable".
One of Hyderabad's earliest newspapers, The Deccan Times, was established in the 1780s. In modern times, the major Telugu dailies published in Hyderabad are Eenadu, Andhra Jyothy, Sakshi and Namaste Telangana, while the major English papers are The Times of India, The Hindu and The Deccan Chronicle. The major Urdu papers include The Siasat Daily, The Munsif Daily and Etemaad. Many coffee table magazines, professional magazines and research journals are also regularly published. The Secunderabad Cantonment Board established the first radio station in Hyderabad State around 1919. Deccan Radio was the first radio public broadcast station in the city starting on 3 February 1935, with FM broadcasting beginning in 2000. The available channels in Hyderabad include All India Radio, Radio Mirchi, Radio City, Red FM and Big FM.
On what date did the first public radio station in Hyderabad begin broadcasting?
A: starting on 3 February 1935

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The Iranian languages or Iranic languages form a branch of the Indo-Iranian languages, which in turn are a branch of the Indo-European language family. The speakers of Iranian languages are known as Iranian peoples. Historical Iranian languages are grouped in three stages: Old Iranian (until 400 BCE), Middle Iranian (400 BCE – 900 CE), and New Iranian (since 900 CE). Of the Old Iranian languages, the better understood and recorded ones are Old Persian (a language of Achaemenid Iran) and Avestan (the language of the Avesta). Middle Iranian languages included Middle Persian (a language of Sassanid Iran), Parthian, and Bactrian.
What stage of Iranian languages from 400 BCE to 900 CE includes old Persian?
A: unanswerable

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By total area (water as well as land), the United States is either slightly larger or smaller than the People's Republic of China, making it the world's third or fourth largest country. China and the United States are smaller than Russia and Canada in total area, but are larger than Brazil. By land area only (exclusive of waters), the United States is the world's third largest country, after Russia and China, with Canada in fourth. Whether the US or China is the third largest country by total area depends on two factors: (1) The validity of China's claim on Aksai Chin and Trans-Karakoram Tract. Both these territories are also claimed by India, so are not counted; and (2) How US calculates its own surface area. Since the initial publishing of the World Factbook, the CIA has updated the total area of United States a number of times.
Since the initial publication of the world factbook Guinness has done what?
A:
unanswerable