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Links:
Physics B AP Curriculum Page
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Concepts:
An electrical circuit is present when there is evidence that electrical energy is being used. An electrical current moves or flows in an electrical circuit and is measured with an ammeter. Electrical voltage is related to energy and is measured with a voltmeter. In an electrical circuit, a strict relationship among voltage, current, and resistance exists (V = IR). That relationship is Ohm's Law.
Objectives Links:
III. C. Electric circuits
Process Skills Checklist
Equipment:
- hookup wire
- ammeter
- voltmeter
- three 1.3V light bulbs / 5, 10, and 20 ohm resistors
- 12 V variable power supply
- two 1.5 dry cells
Safety Concerns:
Because low voltages are being used, risk of dangerous electric shock is minimal. Students should be monitored in battery hookup to avoid overheating due to improper connections. Meter hookup should be monitored to avoid equipment damage.
Revision Date:
December 2003
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