Concepts:

(A detailed list of terms & objectives is available.)

- Concept Summary (PowerPoint) (download the PowerPoint file)
- Potential Difference
- Electric current
- Measuring current

- Maintaining a potential difference - voltage sources

- Electric current
- Ohm's Law
- Resistance
- Using Ohm's Law to solve simple numeric problems
- the Ohm's Law Triangle

- Practice Quiz on Ohm's Law

- Electric shock
- Effects
- How to avoid electric shocks
- What to do in case someone is shocked
- Why do some electric plugs have 2 prongs and some have 3?

- Direct & Alternating Current
- AC/DC conversions
- diodes

- Electron motion in a circuit
- Where do the electrons come from in a circuit?
- What carries the energy in an electric circuit?

- AC/DC conversions
- Electric Power
- Calculating power, voltage, current, and resistance
- How much does it cost to run a light bulb?

Labs & Demos:

Supplements:

- Videodisc - The best From Conceptual Physics Alive!
- Demo: Electric Potential (Side 4 - Chapter 2 - 0:34)
- Caution on Handling Electrical Wires (Side 4 - Chapter 3 - 0.57)
- Birds & High Voltage Wires (Side 4 - Chapter 4 - 0:34)
- Ohm's Law (Side 4 - Chapter 5 - 2:39)
- Alternating Current (Side 4 - Chapter 6 - 2:45)

Links:

- CPSurf - Electric Current - an excellent set of annotated links keyed to your textbook.
- How Electricity Works - part of the amazing "How Stuff Works" web site
- Resistance at the Molecular Level Applet - an interactive animation to give you an idea of how resistance arises at the molecular level.
- Ohm's Law Simulation by Visual Physics
- Java Tutorial - Ohm's Law - a very nicely done interactive tutorial
- Vacuum Tube Diode Applet - demonstrates how a diode can convert AC to DC

last update March 31, 2008 by JL Stanbrough