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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, is measured with an ammeter, and depends on the number of energy users and sources.
Summary:
Students learn how to operate an ammeter and see the effects of voltage and resistance on current flow.
Lab Source:
Inquiry Physics Investigation 15 Lab B
Objectives Links:
III. L: Circuits
Process Skills Checklist
Equipment:
- ammeter
- two 1.5 V dry cells
- two 1.3 V light bulbs in bases
- hook-up wire
Safety Concerns:
Because low voltages are being used, risk of dangerous electric shock is minimal. Students should be monitored in dry cell hookup to avoid overheating due to improper connections. Meter hookup should be monitored to avoid equipment damage.
Revision Date:
Fall 1999
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