A 49-year-old engineer is designing a magnetic brake for a roller coaster. What is the main principle behind this device?
Q1. A 49-year-old engineer is designing a magnetic brake for a roller coaster. What is the main principle behind this device?
Answer: Lorentz force
Explanation: The Lorentz force is the force acting on a moving charge in a magnetic field, making it the main principle behind magnetic brakes. Electromagnetic induction is a related phenomenon, magnetic resonance is a nuclear spin phenomenon, and Faraday's law of electrolysis relates to electrolysis.