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Electromagnets and How They Work

CSEF · 2003 Electricity & Electronics

Kelsey M. DeVries · Colton Middle School, Colton

Overview

Objectives/Goals I wanted to see the relationship between voltage, resistance, and the force created in an electromagnet. Methods/Materials I constructed two electromagnets of varying wire size. I varied the voltage between three and six volts. With varied voltage I measured how many paperclips each electromagnet would lift. Results I found a direct relationship between higher voltage applied and the amount of weight an electromagnet could lift. I also found that as resistance increased for the repective voltages, the strength of the magnetic field decreased. Conclusions/Discussion Increasing voltage increases the strength of a magnetic field, but resistance in varying wire size can increase or reduce that same magnetic field.

Summary statement

I am studying the relationship between varying voltage and resistance in electromagnetic field strength.

Competition history

  • CSEF 2003 Electricity & Electronics · Entry J0709

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