The Shedding Light on Electricity series exposes the shocking truth about electricity. Yes, positively a bad pun to begin with, but we promise to conduct ourselves really well from now on. This series teaches students watts of stuff (sorry, couldn’t resist) about electricity including how it’s produced, how it’s used in our homes, how it’s controlled, and how we keep ourselves safe from nasty shocks. Ohm my goodness, this series is without parallel!
Shedding Light on Electricity Episode 1: Sources of Electricity
In Episode 1, Sources of Electricity, we take a detailed look at where our electricity comes from: thermal and hydroelectric power stations, wind farms, and solar farms. We also examine the advantages and disadvantages of these sources of electricity.
Shedding Light on Electricity Episode 2: Electric Circuits
In Episode 2, Electric Circuits, we examine how lights, switches, and other electrical devices are all connected either in “series” or in “parallel” with each other. How do they wire up the lights in your house so that in some rooms the light switch turns on only one light but in other rooms the light switch switches on two (or more) lights? And how is everything wired up so as to allow us to turn the lights on and off in different rooms independently of one another. Well, don’t wait at the terminal, jump on board.
Shedding Light on Electricity Episode 3: Electric Current
In Episode 3, Electric Current, we take a look at what electric current is (it’s basically the flow of electrons through a wire) and at how electric current is measured. We then examine the different ways that electric current flows in series and parallel circuits.
Shedding Light on Electricity Episode 4: Voltage, Current, and Resistance
In Episode 4, Voltage, Current, and Resistance, we look at how electrical equipment is designed to use the right amount of current for the voltage supply that it’s designed for. After a brief recap on electric current (that we examined in Episode 3) we look at what voltage is and how it is measured. We then look at the concept of resistance. At a simple level, some materials are conductors and some materials are insulators, but not all conductors conduct equally well. The amount of current that flows in a household appliance depends on the appliance’s resistance!
Shedding Light on Electricity Episode 5: Electrical Safety
In Episode 5, Electrical Safety, we first look at the dangers of electric shocks by actually demonstrating an electric shock. We then look at the safety features built into our homes and electrical devices that keep us safe from electric shocks.
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