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In episode 4 of the series, 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!
Length: 23 minutes
Copyright date: ©2020
Prices include public performance rights.
Not available to Home Video customers.
How Does a Solenoid Work?
How are Relays Used in Circuits?
How is Resistance Measured in a Wir...
How are Magnets Made?
How Does an Electric Motor Work?
Once Upon a Time—Electricity
From Amber to Light: Once Upon a Ti...
Shedding Light on Electricity
Episode 1: Sources of Electricity
Episode 2: Electric Circuits
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