Velocity Selector: an Electron Moving with a Velocity =

question 64

Multiple Choice

Velocity selector: An electron moving with a velocity = 5.0 × 10⁷ m/s enters a region of space where perpendicular electric and a magnetic fields are present. The electric field is = . What magnetic field will allow the electron to go through the region without being deflected?

• A) = +2.0 × 10^-4 T
• B) = -2.0 × 10^-4 T
• C) = +2.0 × 10^-4 T
• D) = -2.0 × 10^-4 T
• E) = +5.0 × 10^-4 T

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Definitions:

Production Possibilities

A curve or frontier that shows the various combinations of different goods that an economy can produce, given its technology and resources.

Absolute Value

The distance of a number from zero on the number line, disregarding any sign it might have, making it always a non-negative value.

Budget Line

A visual depiction of every potential mix of two products that a consumer can purchase, considering their income and the cost of these items.

Linear Relationship

A direct relationship between two variables that can be represented by a straight line on a graph.