Cornell PHYS 2213: Physics II: Electromagnetism
PHYS 2213 is Cornell's calculus-based electromagnetism course, covering electric fields and potential, Gauss's law, capacitance, circuits, magnetic fields, induction, and an introduction to electromagnetic waves. It follows PHYS 1112 for engineering and physical science majors.
Fennie is independent and not affiliated with Cornell University. This is an unofficial study guide.
What makes it hard
E&M is more abstract than mechanics: fields and potentials are invisible, and the math (vector calculus, Gauss's and Ampère's laws by symmetry) is heavier. Students who got by on mechanical intuition in PHYS 1112 lose that crutch here, and prelims reward recognizing the right symmetry and principle for an unfamiliar configuration rather than recalling formulas.
What you'll cover
- • Electric fields and Coulomb's law
- • Gauss's law and electric potential
- • Capacitance and dielectrics
- • DC circuits
- • Magnetic fields and Ampère's law
- • Electromagnetic induction
The PHYS 2213 study guide
How to study for Cornell PHYS 2213, step by step.
- 1
Build intuition for invisible fields
PHYS 2213's abstraction is the hurdle: electric and magnetic fields can't be pictured the way blocks and ramps could. Draw field lines and equipotentials constantly until the geometry feels concrete.
- 2
Master symmetry arguments for Gauss's and Ampère's laws
These laws are powerful only when you choose the right surface or loop from the configuration's symmetry. Practice recognizing the symmetry first, since that choice is the whole problem on many prelims.
- 3
Keep the vector calculus comfortable
E&M leans harder on vectors and integrals than mechanics did. Keep that math fluent so it isn't a second source of friction layered on the conceptual difficulty.
- 4
Practice unfamiliar configurations
Prelims test reasoning about setups you haven't seen, not formula recall. Work problems from past exams and other sources so you train the recognition the course actually grades.
Today
Today's PHYS 2213 plan
What a Fennie Daily Plan looks like for PHYS 2213. Yours is built from your own syllabus and adapts every day to your deadlines and progress.
First plan free, no card required. Fennie is independent and unaffiliated with your school.
FAQ
Is PHYS 2213 harder than PHYS 1112?
Many students find it more abstract. Electromagnetism deals with invisible fields and leans harder on vector calculus, so the mechanical intuition that carried PHYS 1112 stops helping. Prelims reward recognizing the right symmetry and principle for unfamiliar configurations.
How do I study for PHYS 2213?
Draw field lines and equipotentials until the geometry feels concrete, and practice recognizing symmetry for Gauss's and Ampère's laws, since that choice is often the whole problem. Work unfamiliar configurations from past prelims rather than memorizing formulas.
Do I need PHYS 1112 before PHYS 2213?
Yes. PHYS 1112 (or equivalent) is the prerequisite, along with continued calculus. PHYS 2213 assumes comfort with the problem-solving discipline from mechanics and builds straight into the more abstract and math-heavy electromagnetism material.