Electricity & Electronics Resources
Some projects in Electricity & Electronics require the soldering of components into an electrical circuit. Solder is a metal alloy that melts at the relatively low temperature provided by a soldering iron, insuring good and lasting connections ... [... more]
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How to Measure Voltage & Current
Voltage is the electromotive force that moves electrons through conductive objects. We know from Ohm's law (V = I × R) that the voltage across an object is equal to the current through that object times the resistance of that object. If we know ... [... more]
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How to Use a Breadboard
The term breadboard may sound like a strange material to use when you're talking about building a circuit. The term is derived from the time of early circuit building. In those days, a breadboard was a large wooden plank used to slice a loaf of ... [... more]
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Rock On! Recording Digital Data with Magnets
The goal of this project is to determine the maximum "recording density" for storing digitized information using a grid of bar magnets. You'll learn about how information is digitized, and how the digitized information is stored magnetically. [... more]
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Please note:
The objective of this project is to build a simple radio receiver from scratch, then experiment to make improvements. Cell phones, satellite TV, walkie-talkies, car radios, GPS, and baby monitors all rely on radios to function. This fun ... [... more]
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The Strength of an Electromagnet
The goal of this project is to investigate the strength of an electromagnet made from a coil of wire. How does the strength of the magnetic field change as the number of turns in the coil is increased? An electric current flowing in a wire ... [... more]
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Be careful with this step! Avoid touching the heated wires!
The goal of this project is to investigate thermoelectricity. How much voltage can be generated between two junctions made of different conductive materials held at different temperatures? Can you create a temperature difference between two ... [... more]
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Electrical conductance,
In this science fair project, assess water purity by measuring conductance using a data acquisition device. The goal of this experiment is to assess the purity of water samples by measuring their conductance (the inverse of electrical resistance) ... [... more]
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Electrophorus Assembly
Build a Leyden jar capacitor and an electrophorus to transfer charge to the Leyden jar. Investigate how much charge is stored in the Leyden jar as a function of the number of charge cycles. Learn about one of the building blocks for all types of ... [... more]
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Using a Magnet as an Electrical Current Detector*
Gardner, R., 2004. Electricity and Magnetism Science Fair Projects: Using Batteries, Balloons, and Other Hair-Raising Stuff. Berkeley Heights, NJ: Enslow Publishers. Math, I., 1981. Wires and Watts: Understanding and Using Electricity. New York, ... [... more]
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Rubbing Up Against Static Electricity
In this experiment you will test if the number of rubs of wool on a balloon increases or decreases how long the static charge will last. In this experiment you will test if the number of rubs can change how long the static charge will last by ... [... more]
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Pencil Resistors
In this experiment you will test if the length of a pencil resistor effects the output of a circuit. In 1820, André-Marie Ampère published his explanation of Hans Christian Orsted's discovery that magnetic needles could be deflected by an .. [... more]
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