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Build a relay to remotely control other electrical circuits
A classic example of an electrical relay is the system used to start a car. When someone turns an...
September 25, 20150 -
Build and learn about an ‘AND’ and ‘OR’ computer logic circuit
A 'logic gate' is a circuit that will allow passage of a signal under certain conditions only. The two...
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Build an integrated circuit oscillator
An oscillator is a type of electrical circuit where the voltage output can be switched to be high or...
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Make your own electrical light bulb
When electrical current is passed through the filament, the resistance builds up so much heat that it starts to...
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Use Ohms law to determine a rheostat’s resistance by measuring voltage
This resistor arrangement is called a 'voltage divider' circuit. In the following science experiment, use a voltage divider circuit...
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Compare how a circuit is affected by resistors in series versus parallel
Depending on how resistors are included in such a circuit or 'loop', it would reduce and affect the current...
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Demonstrate how resistance in an electrical conduit can produce heat
Pass electrical current through a 'nichrome' wire to test if the side closest to the negative pole of a...
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Make a working rheostat to control the flow of electrical current
A 'rheostat' simply works by passing electrical current through a poor conductor as you will see in this science...
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Make an Eddy-current motor
When current is induced in such a conductor, the induced current often flows in small circles that resemble eddies...
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Display a three dimensional magnetic field in mineral oil
In this science experiment, you will suspends some iron filings in mineral oil to allow you to see a...
