Understanding how electric charge is conserved.
Understanding quantization of charge
Understanding electric current.
Understanding electric potential
Understanding electric currents
Drawing and interpreting electric field diagrams
Understanding how charge is transferred through an electroscope.
Understanding electric force and Coulomb's Law.
How to predict the behavior of electric currents in magnetic fields.
Understanding potential difference.
How resistors in series affect current flow.
How resistors in parallel affect current flow
How resistors affect electric current.
Combining capacitors and resistors in electric circuits.
How to use Ohm's law to relate potential difference and current flow.