An Electron Is Accelerated from Rest by an Electric Field

question 16

Multiple Choice

An electron is accelerated from rest by an electric field. After the acceleration, the electron is injected into a uniform magnetic field of 1.27 × 10^-3 T. The velocity of the electron and the magnetic field lines are perpendicular to one another. The electron remains in the magnetic field for 5.00 × 10^-9 s. The angle between the electron velocity on entry and the electron velocity at exit from the magnetic field is

• A) 1.1 rad.
• B) 5.8 × 10^-2 rad.
• C) 8.68 × 10^-2 rad.
• D) 6.5 × 10^-2 rad.
• E) 2.3 rad.

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Definitions:

Good Substitutes

Products or services that can be used in place of one another, satisfying the same needs or wants of the consumer.

Elastic

Describes demand or supply that is highly sensitive to changes in price; a small change in price leads to a large change in the quantity demanded or supplied.

Perfectly Inelastic

Describing a situation where demand or supply does not change in response to changes in price.

Quantity Demanded

The total amount of a good or service that consumers are willing and able to purchase at a specific price.