In a Region of Space Where the Magnetic Field of the Earth

question 14

Multiple Choice

In a region of space where the magnetic field of the Earth has a magnitude of 80 μT and is directed 30° below the horizontal, a 50-cm length of wire oriented horizontally along an east-west direction is moved horizontally to the south with a speed of 20 m/s. What is the magnitude of the induced potential difference between the ends of this wire?

• A)0.45 mV
• B)0.35 mV
• C)0.30 mV
• D)0.40 mV
• E)0.69 mV

---

Definitions:

Robert Heilbroner

An American economist known for his works on the history of economic thought and capitalism.

21st and 22nd Centuries

The periods of time spanning from 2001 to 2100 and 2101 to 2200, respectively, in the Gregorian calendar.

Supremacy Clause

A clause in the U.S. Constitution declaring that federal law takes precedence over state law if there is a conflict between them.

Federal Law

Federal law refers to the body of law created by the national government of a country, which applies to the entire country and takes precedence over state or local laws.