电磁学专业 Certification
精通经典电磁学中的场、力与波
Key facts
- Level: Professional
- Field: Physics
- Estimated study time: about 36 hours
- Credential price: $149
- Exam: 95 questions · 150 minutes · pass mark 75%
About the 电磁学专业 certification
电磁学专业认证验证你对经典电磁学的深入实用掌握——这一理论统一了电与磁现象，是所有电气工程、光学与现代通信的基础。 你将对电荷与库仑定律进行定量推理，从点电荷和连续分布构建并叠加电场，利用对称性应用高斯定律，并熟练运用电位、电势能和等势面。你将分析电容、电介质和储存的场能；将欧姆定律、电阻和功率应用于直流电路，用基尔霍夫定律求解网络，并分析RC瞬态响应。 磁学部分发展了洛伦兹力、电流所受的力与力矩、带电粒子运动，以及通过毕奥-萨伐尔定律和安培定律（螺线管、环形螺线管）求磁场来源。你将掌握电磁感应——法拉第定律与楞次定律、动生电动势、自感与互感，以及RL电路——然后是交流电路，包括阻抗、RLC谐振和相量。压轴部分将一切融会贯通：积分形式和微分形式的麦克斯韦方程组、位移电流，以及由此预测的电磁波——波动方程、坡印廷矢量、偏振与电磁波谱。 考试在计算与概念推理之间各占相当比重。考生应已持有物理学基础证书，或具备同等的向量、微积分与牛顿力学基础。
What you will learn
The official 电磁学专业 study course covers:
- Charge, Fields and Gauss's Law — Electric charge and Coulomb's law, the electric field and field lines, and Gauss's law with its symmetric applications.
- Potential, Capacitance and Current — Electric potential and equipotentials, capacitance with dielectrics and stored energy, and current, resistance and Ohm's law.
- DC Circuits and RC Transients — Kirchhoff's laws, series and parallel reduction, and the exponential behaviour of RC circuits.
- Magnetic Forces and Sources — The Lorentz force and charged-particle motion, forces and torques on currents, and the magnetic fields of wires and solenoids.
- Induction, Inductance and AC — Faraday's and Lenz's laws and motional EMF, self- and mutual inductance with RL circuits, and AC impedance and RLC resonance.
- Maxwell's Equations and EM Waves — The four Maxwell equations and the displacement current, the electromagnetic wave and its energy, and the spectrum, polarization and magnetic materia…
Prerequisites
Frequently asked questions
- Is the 电磁学专业 certificate verifiable?
- Yes. Every issued Hootix Academy certificate carries a unique credential code that anyone can verify online.
- How is the 电磁学专业 exam structured?
- It is a 150-minute proctored multiple-choice exam of 95 questions; you need 75% to pass.
- Do I need to buy the course to take the exam?
- You can purchase the certification exam on its own, or bundle it with the full study course at a reduced price.
- How long does the 电磁学专业 course take?
- About 36 hours of self-paced study.