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CSCA PhysicsChapter 2: ElectromagnetismIntermediate

Electrostatics & Direct Current Circuits

静电场、电势与直流电路分析 · Node 2.1

Coulomb's law, electric field strength, electric potential, Ohm's law, and series-parallel resistance networks.

Chapter Weight: 30% of official examination
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Core Mathematical Axiom

Formula Proof & Traps
Fe​=kr2∣q1​q2​∣​,E=r2kQ​,V=rkQ​,I=RU​,E=I(R+r)
CSCA Exam Trap Alert

Neglecting the battery's internal resistance r when calculating terminal voltage under heavy load current.

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