Changes

==Demonstration==

==Demonstration==

[[File:E W Circuit Pic.jpg|400px|thumb|right]][[File:Resistor-color-chart.png|400px|thumb|right]]

[[File:E W Circuit Pic.jpg|400px|thumb|right]][[File:Resistor-color-chart.png|400px|thumb|right]]

Set up a breadboard with a 10kΩ potentiometer as a voltage divider. Connect an LED's anode (the longer leg) to the wiper of the potentiometer. Connect a 560Ω resistor to the cathode (the shorter leg), and connect the other side of the resistor to ground. See the demo circuit diagram to the right for reference.

Set up a breadboard with a 10kΩ potentiometer as a voltage divider. Connect an LED's anode (the longer leg) to the wiper of the potentiometer. Connect a 560Ω resistor to the cathode (the shorter leg), and connect the other side of the resistor to ground. See the demo circuit diagram for reference.

[[File:E W Circuit Diagram.jpg|400px|thumb|none|Demo Circuit Diagram]]

[[File:E W Circuit Diagram.jpg|400px|thumb|none|Demo Circuit Diagram]]

Part 1: Connect a DC power supply to the input and set it to 10V. Slowly adjust the potentiometer to determine how much voltage and current is needed to turn on the LED. Measure the voltage and current using the digital multimeter.

Part 1: Connect a DC power supply to the input and set it to 10V. Slowly adjust the potentiometer to determine how much voltage and current is needed to turn on the LED. Measure the voltage and current using the digital multimeter.