A Velocity Selector Uses a Fixed Electric Field of Magnitude

question 55

Multiple Choice

A velocity selector uses a fixed electric field of magnitude E and the magnetic field is varied to select particles of various energies. If a magnetic field of magnitude B is used to select a particle of a certain energy and mass, what magnitude of magnetic field is needed to select a particle of equal mass but twice the energy?

• A) 0.50 B
• B) 1.4 B
• C) 2.0 B
• D) 0.71 B
• E) 1.7 B

---

Definitions:

Commercialization

The stage of the new-product development process that positions and launches a new product in full-scale production and sales.

Product Concept

An early stage of the product development process where the focus is on understanding the product's features, benefits, and potential market.

Product Life Cycle

The stages a product goes through from development and introduction to the market, growth, maturity, and eventual decline.

Marketing Objective

Specific goals set by a business or organization aiming to promote its products or services effectively and achieve market success.