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Third Prong The round prong of a plug that connects any metal pieces in an appliance to
safety.
Transformer A device that increases or decreases voltage.
Transistor An electronic component used to amplify an electronic signal or to switch current
on and off.
Voltage The difference in electrical potential energy between two places in a circuit.
Voltage Source A device that creates an electrical potential energy difference in an electric
current; for example batteries and generators.
Voltmeter A device used to measure voltage, or electrical potential energy difference.
Water What turns the generator in hydroelectric plants.
Zener Diode A diode that can conduct in reverse bias and is commonly used in voltage
regulation.
10 A resistor with the bands brown, black, blue, has a resistance of __MEG ohms.
34K A resistor with the bands orange, yellow, orange, has a resistance of __ ohms.
5 A resistor with a gold band as the forth one has a tolerance of __%