Heating up a wire using electrical current

AI Thread Summary
To effectively heat a wire for cutting styrofoam, a power source of 5 amps may be insufficient, especially for longer wires. Shortening the wire can increase its temperature, making it more effective for cutting. Resources like Google and Instructables provide valuable information on wire gauge, length, and current requirements for optimal performance. Experimentation with different wire types and configurations is recommended to achieve the desired heating effect. Proper guidance and construction techniques are essential for creating an efficient hot wire cutter.
Beatriz Perez
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I have very little knowledge when it comes to physics. I'm trying to heat up a guitar string using electricity. The power source is 5 amps and only slightly heats up the string. I need a wire to get hot enough to cut through styrofoam. Please help with wire and power source suggestions.
 
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