A Wire of Radius 0 $\times$ 10^-6 M/s $\times$ 10²⁹ M^-3
B) 4

question 17

Multiple Choice

A wire of radius 0.15 mm is made of an unknown metal and carries a current of 8.4 mA.The drift velocity for electrons in the wire is measured to be 36 $\times$ 10^-6 m/s.What is the carrier density of the metal from which the wire is made?

• A) 1.3 \(\times\) 10²⁹ m^-3
• B) 4.2 \(\times\) 10²⁸ m^-3
• C) need more information to do this calculation.
• D) 4.2 \(\times\) 10³⁰ m^-3

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Definitions:

Progressivism

Broad-based reform movement, 1900–1917, that sought governmental action in solving problems in many areas of American life, including education, public health, the economy, the environment, labor, transportation, and politics.

Wilsonian Moralism

Refers to President Woodrow Wilson's foreign policy ideology focused on spreading democracy, supporting national self-determination, and promoting ethical practices in international relations.

Office Of War Information

A U.S. government agency created during World War II to consolidate government news, propaganda efforts, and to promote war information and morale.

Communists

Members or supporters of a communist party, advocating for a society in which all property is publicly owned and each person works and is paid according to their abilities and needs.