Physics Quiz: Part 10
An interactive quiz on Electromagnetism and Induction.
💡 Electromagnetism Core Concepts
Magnetic Force: A magnetic field $\vec{B}$ exerts a force on a moving charge $q$. The magnitude is $F = |q|vB\sin(θ)$. Its direction is found with the Right-Hand Rule.
Magnetic Flux ($Φ_B$): A measure of the magnetic field lines passing through an area. $Φ_B = BA\cos(θ)$.
Faraday's Law of Induction: A changing magnetic flux induces a voltage (EMF). $$E = -N \frac{ΔΦ_B}{Δt}$$
Lenz's Law: The induced current creates a new magnetic field that opposes the change in flux that created it. This is conservation of energy.
Motors & Generators: A motor converts electrical to mechanical energy. A generator converts mechanical to electrical energy.
Problem 1: Field from a Current
EasyA wire carries a current directly into the page (represented by ⊗). What is the direction of the magnetic field at a point directly above the wire?
🎉 Series Conclusion
Congratulations on completing all 10 parts of this physics guide! From the basic language of vectors to the complexities of electromagnetism, you have covered the foundational principles needed for your exams. Physics is a challenging subject, but it is also incredibly rewarding. By understanding these rules, you understand how the universe works.
Review these guides, practice many problems, and stay curious. You are now well-equipped to tackle your exams. Good luck! You can do this! 💪