Ratios
Type
Label
Ratios
Language
eng
Characteristic
videorecording
Main title
Ratios
Oclc number
956905500
resource.otherEventInformation
Originally produced by Benchmark Media in 2004
Runtime
23
Summary
The program introduces electric current and voltage and measures these in series and parallel circuits. An experiment to measure resistance is demonstrated and results are shown graphically. Resistance is introduced and calculated from the gradient of V-I graphs. Ohm's Law is discussed and the V-I graph for a light bulb is plotted. Resistance is shown to depend on the type of metal, the length of a wire, the thickness of a wire and on the temperature, concluding with a demonstration of a superconductor. Animations of positive ions and free electrons explain the observed behaviour
Technique
live action
Contributor
Genre
Content
Distributor
Is Part Of
Mapped to
Incoming Resources
- Has instance1
Outgoing Resources
- Contributor2
- Genre1
- Subject2
- Content1
- Distributor2
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