Physics4kids
Physics4 Kids: Electricity and Magnetism: Alternating Current
Alternating current, defined and illustrated.
Tech Target
What Is: Alternating Current (Ac)
This site provides a brief explanation of what an AC current is.
Tech Target
What Is: Resistance
A short summary of resistance and how it is measured. Including information on AC and DC.
Science Struck
Science Struck: Difference Between Alternating and Direct Current
Explains what alternating current and direct current are and what they are used for.
Science4Fun
Science4 Fun: Voltage, Current, and Resistance
Illustrated explanation of voltage, current, and resistance and the relationship between them.
Corrosion Source
Corrosion Source: Actinium
This resource provides a summary of basic data and information on the properties of actinium.
Curated OER
Hyper Physics: Ac Circuits
A very comprehensive site organized well with many topics dealing with AC circuits.