Each group needs:

• magnetic field sensor
• Physics with Vernier Lab Book
• metal slinky
• switch
• meter stick
• DC power supply
• ammeter
• connecting wires
• non-conducting tape, such as masking tape
• Slinky Lab Handout, one per student

The cost of durable goods needed for this lab—magnetic field sensor, Physics with Vernier Lab Book, DC power supply, ammeter and connecting wires—totals ~$250.

Note: The lab description describes the lab using Vernier magnetic field sensors and equipment, but the lab can be adapted to any sensor and calculator or computer. Vernier sensors can be ordered from www.vernier.com. Other companies include Pasco (www.pasco.com), and Texas Instruments (www.ti.com)