The Figure Shows a Velocity Selector That Can Be Used

question 9

Multiple Choice

The figure shows a velocity selector that can be used to measure the speed of a charged particle. A beam of particles is directed along the axis of the instrument. A parallel plate capacitor sets up an electric field E, which is oriented perpendicular to a uniform magnetic field B. If the plates are separated by 2.0 mm and the value of the magnetic field is 0.60 T, what voltage between the plates will allow particles of speed 5.0 × 10⁵ m/s to pass straight through without deflection?

• A) 600 V
• B) 1900 V
• C) 3800 V
• D) 190 V
• E) 94 V

---

Definitions:

Goal-Directed Behavior

Actions taken with the intention of achieving a specific outcome or target.

Sensorimotor Period

A stage in early childhood development, according to Piaget's theory, where infants learn about the world primarily through their senses and motor activities.

Propositional Thought

Propositional thought is the ability to engage in complex reasoning and logically consider propositions and hypotheses.

Abstract Logic

The ability to think about objects, principles, and ideas that are not physically present. It involves reasoning and complex thought processes, often considered a component of advanced cognitive development.