The premier destination for fun science projects & experiments for kids grades K-8 since 2010!

# Electricity & Magnetism

• ## 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...

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• ## 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...

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