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...
Build an integrated circuit oscillator
An oscillator is a type of electrical circuit where the voltage output can be switched to be high or...
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...
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...
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...
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...
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...
Make an Eddy-current motor
When current is induced in such a conductor, the induced current often flows in small circles that resemble eddies...
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...