In this task you will be given a text passage from a trivia quiz. You should choose the category this question belongs to from these categories: History, Science, Social Science, Fine Arts, Literature. You can only choose one category, so if in doubt, please choose the closest match.

In ferromagnetic materials, a version of this effect occurs in which the resultant resistivity predicted by this effect contains an additional zero-field term proportional to the magnetization. Arranging two solid-state elements which demonstrate this effect at right angles to each other and summing their output voltage to eliminate the noise is a typical way of producing a magnetic field sensor using this effect. This effect is derived by noting that the current crossed with the magnetic field creates a transverse current, which results in a potential difference. For ten points, identify this classical effect in which charge flowing across a transverse magnetic field results in an electric field component orthogonal to both the current and the magnetic field, often used to measure the sign of charge carriers.
Science

A weight of the nth power of this parameter is imputed to contributions to elements of an S matrix by nth-order Feynman diagrams; thus, this number can be considered the order of expansion in perturbative quantum electrodynamics. This constant is a measure of the electron anomalous magnetic moment, which explains its role in the relativistic splitting of atomic spectral lines that is its namesake. The coupling constant for the electromagnetic interactions of electrons, it is equal to the square of the ratio of the electron and Planck charges, or, in cgs units, the electron charge squared divided by the speed of light times Diracs constant. For ten points, name this physical constant usually denoted alpha and equal to about one over one hundred thirty-seven.
Science

Early editions of this play do not feature the appearance of Mrs. Johnson, who quotes, Education has spoiled many a good plow hand. In the first scene of the second act, one character drunkenly dances on a table while shouting FLAMING SPEAR! in response to another character's cry of OCOMOGOSIAY. That character is nicknamed Alaiyo by one of her suitors, whom she prefers over George Murchison. Bobo's failure to meet Willy Harris in Springfield puts an end to the male protagonist's plan to open a liquor store. That protagonist enrages his mother by deciding not to deposit $3,000 for his sisters education, but later tells Karl Lindner that his family will move to Clybourne Park. FTP, name this play about Travis, Ruth, Benethea, and Walter Lee Younger, written by Lorraine Hansberry.

Literature

