Electrostatics

Physics · Unit 3 — Gravity and electromagnetism · Electromagnetism

Learning objectives (21)

LO-1Describe Coulomb’s Law.LO-2Describe the concept of a magnetic field.LO-3Describe the concept of an electromagnetic wave.LO-4Describe the concepts of electric fields, electric field strength and electrical potential energy.LO-5Describe the concepts of magnetic flux, magnetic flux density, electromagnetic induction, electromotive force (EMF), Faraday’s Law and Lenz’s Law.LO-6Describe the force experienced by electric current-carrying conductors and moving electric charges when placed in a magnetic field.LO-7Describe the generation of a magnetic field from a moving electric charge.LO-8Describe the process of inducing an EMF across a moving conductor in a magnetic field.LO-9Explain how Lenz’s Law is consistent with the principle of conservation of energy.LO-10Explain how transformers work in terms of Faraday’s Law and electromagnetic induction.LO-11Explain the relationship between oscillating electric charges and electromagnetic waves. The following subject matter may be assessed in the internal assessments.LO-12Interpret data relating to the force acting on a conductor in a magnetic field.LO-13Interpret data relating to the strength of a magnet at various distances. Electromagnetic induction LO-14Sketch magnetic field lines due to a moving electric charge, electric currents and magnets.LO-15Solve problems involving electric field strength using 𝐸 = 𝐹 𝑄 = 1 4𝜋𝜀𝑜 𝑞 𝑟2 = 𝑘𝑞 𝑟2.LO-16Solve problems involving electromagnetic induction using 𝑒𝑚𝑓 = − 𝑁∆(𝐵𝐴⊥) ∆𝑡, 𝑒𝑚𝑓 = −𝑁 ∆𝜙 ∆𝑡, 𝐼𝑝𝑉𝑝 = 𝐼𝑠 𝑉𝑠 and 𝑉𝑝 𝑉𝑠 = 𝑁𝑝 𝑁𝑠.LO-17Solve problems involving the magnetic flux in an electric current-carrying loop using ∅ = 𝐵𝐴𝑐𝑜𝑠𝜃.LO-18Solve problems involving the magnetic force on an electric current-carrying wire and moving charge in a magnetic field using 𝐹 = 𝐵𝐼𝐿𝑠𝑖𝑛𝜃 and 𝐹 = 𝑞𝑣𝐵𝑠𝑖𝑛𝜃.LO-19Solve problems involving the magnitude and direction of magnetic fields around a straight electric current-carrying wire and inside a solenoid using 𝐵 = 𝜇𝑜 𝐼 2𝜋𝑟 and 𝐵 = 𝜇𝑜 𝑛𝐼.LO-20Solve problems involving the work done when an electric charge is moved in an electric field using 𝑉 = ∆𝑈 𝑞. Magnetic fields LO-21Solve problems using 𝐹 = 1 4𝜋𝜀𝑜 𝑄𝑞 𝑟2 = 𝑘𝑄𝑞 𝑟2.

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