Chem/Phys · 4C

Electricity, magnetism, and electrochemistry

Content category 4C. 29 questions in 6 sets, each with reasoning for every answer choice.

Set 1 · Capacitors

  1. Adding a dielectric to a capacitormedium
  2. Capacitors in seriesmedium
  3. Energy stored in a capacitormedium
  4. Capacitance with a dielectric and smaller gapmedium
  5. The RC time constanthard

Set 2 · Circuits

  1. Current in a series circuiteasy
  2. Equivalent resistance in paralleleasy
  3. Resistance of a light bulbmedium
  4. Parallel bulbs: when one burns outmedium
  5. Current through one branch of a combined circuithard

Set 3 · Electrochemistry

  1. Which parallel resistor dissipates more power?hard
  2. Electrolytic cell characteristicseasy
  3. Galvanic cells: electrodes, electron flow, and ΔGmedium
  4. Standard cell potentialhard
  5. ΔG° from cell potentialhard

Set 4 · Electrostatics

  1. Mass of copper plated by electrolysishard
  2. Nernst potential for potassiumhard
  3. Coulomb's law: doubling the distanceeasy
  4. Work to move a charge through a potential differenceeasy
  5. Electric field between parallel platesmedium

Set 5 · Electrostatics

  1. Potential energy of an electron near a negative chargemedium
  2. Electric potential near a point chargemedium
  3. Where the electric field is zerohard
  4. Work along an equipotential surfacehard
  5. Magnetic force on a moving chargemedium

Set 6 · Magnetism

  1. Magnetic field near a straight wiremedium
  2. Faraday's law: induced emfmedium
  3. Magnetic force on a moving protonmedium
  4. Radius of circular motion in a magnetic fieldhard