UNIT VIII. DC CIRCUITS

8.1 Electric Current

- Define an electric current and the ampere.

- Describe conditions that create current in an electric circuit.

8.2 Ohm’s Law

- Define resistance and state Ohm’s Law

- Explain the factors affecting the resistance of a conductor.

8.3 Electric Power

- Define power in electric circuits.

- Explain how electric energy is converted into thermal energy.

- Define kilowatt-hour and calculate energy consumption.

8.4 Resistors in Series and in Parallel

- Describe both a series connection and a parallel connection

  and state the important characteristics of each.

- State and apply Kirchhoff's laws to calculate the current, voltage

  drops, and equivalent resistance for devices connected in series

  and in parallel.