As Shown Below, a Square Loop of Wire of Side

question 26

Multiple Choice

As shown below, a square loop of wire of side a moves through a uniform magnetic field of magnitude B perpendicular to the page at constant velocity directed to the right. Judd says that the emf induced in the loop is zero. Roger claims that it has magnitude B . Which one, if either, is correct, and why?

• A) Judd, because the magnetic flux through the loop is constant.
• B) Roger, because the magnetic flux through the loop is constant.
• C) Judd, because the magnetic flux through the loop is not constant if .
• D) Roger, because the magnetic flux through the loop is not constant if .
• E) Roger, because the magnetic flux through the loop is Φ_B = 0.

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Definitions:

Nativism

The political policy of promoting the interests of native inhabitants against those of immigrants, including the support of immigration-restriction measures.

Prohibition

The prohibition of producing, selling, and moving alcoholic drinks in the US from 1920 to 1933, enacted through the 18th Amendment.

Female Reformers

Women who actively work or have worked toward social, political, or environmental change, often advocating for rights, equality, and justice.

Labor Force

The total number of people available for work, including both the employed and the unemployed.