D.2.2 - Magnetic Fields
Enroll to start learning
You’ve not yet enrolled in this course. Please enroll for free to listen to audio lessons, classroom podcasts and take practice test.
Practice Questions
Test your understanding with targeted questions
What is a magnetic field?
💡 Hint: Think about where you might feel a force when moving near magnets.
What does the symbol μ₀ represent?
💡 Hint: It's a constant used in magnetism equations.
4 more questions available
Interactive Quizzes
Quick quizzes to reinforce your learning
What is the formula for magnetic force on a charge?
💡 Hint: It's the most specific formula discussed.
True or False: The magnetic field strength increases as you move away from a current-carrying wire.
💡 Hint: Think about the relationship in the formula.
Get performance evaluation
Challenge Problems
Push your limits with advanced challenges
A charged particle with a charge of +2 C is traveling at a speed of 10 m/s through a magnetic field of strength 0.2 T. Calculate the magnetic force acting on it when the angle θ is 60 degrees.
💡 Hint: Use the sine of 60 degrees for your calculations.
Describe how and why the magnetic field strength changes as you move away from a current-carrying wire, using the formula B = μ₀ I / (2πr). Calculate the field strength from a wire carrying 3 A at a distance of 0.3 m.
💡 Hint: Focus on the relationship between r and B, and compute based on the constants provided.
Get performance evaluation
Reference links
Supplementary resources to enhance your learning experience.