Added by Craig Napier on Dec 15, 2008
This activity introduces the concept of resistance and explains a resistor as a device designed to reduce current. The student moves a slider on a rheostat and places various resistors into a circuit, in order to observe the effects and measure the resulting current on an ammeter
This item teaches:
- the relationship between the current and the potential difference across a resistor at constant temperature
- the resistance equation: potential difference = current x resistance
- about Ohm's law
- ammeter, variable resistor, current, resistance, rheostat
- 1,856 times
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