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# By: Jennifer.  What kind of movement will a magnet produce in a current – carrying wire?

## Presentation on theme: "By: Jennifer.  What kind of movement will a magnet produce in a current – carrying wire?"— Presentation transcript:

By: Jennifer

 What kind of movement will a magnet produce in a current – carrying wire?

 My hypothesis is that the magnet will make the wire jump.

 Size of magnets  Amount of magnets  Type of battery  Length of wire  Length of pencil  Type of pencil  Size and length of duct tape  Length between pencil and magnets  Amount of time that wire touches battery  Surface tested on Constants

 The independent variable in my experiment is how the magnets move the wire. Independent Variable

 The dependent variable in my experiment is the kind of movement the wire makes. Dependent Variable

 2 small disk magnets  1 roll of duct tape (may not use whole roll)  1 18-inch (45-cm) uninsulated 18-gauge wire  1 #2 wooden pencil  1 size D battery  1 adult helper or person older than 15  1 wooden surface

1. Gather materials 2. Cut duct tape so that it is about ½ inch 3. Tape the ends of the wire 4. Set wire aside and get magnets 5. Place magnets on wooden table, leaving about 3/8 inch (1 cm) space between them. Make sure that the opposite poles of the magnets are facing each other (north-south). 6. Tell helper to rip enough tape, then tape magnets to table

7. Grab wire and wrap the ends of the wire around the pencil, creating a loop, and leave about 4 inches (10 cm) at either ends 8. Call helper to rip 2 small pieces of tape and tape the wire to the pencil so that there is 2 inches of space between the loops 9. Place the pencil on the table so that loop is centered between the 2 magnets 10. Command helper to rip small piece of tape and tape pencil to table

11. Get battery and put in on the table at the open end of the wire, just above the duct taped ends 12. Order helper to rip tape so that is big enough to tape to the tape; tape battery to table 13. Have helper simultaneously touch the ends of the wire to the ends of the battery 14. Immediately remove the wire from the battery after a few seconds (10 sec.)

15. The other person’s job is to record what happens when the wire touches the battery 16. Remove the tape from the wire around the pencil and magnets, and remove wire 17. Repeat steps 2-4 with a new wire, steps 7-10 but use battery as guide when placing wire, place magnets 3/8 inch (1 cm) apart on right side of the loop of the wire and tape it down, and repeat steps 13-16 for 2 nd trial 18. Repeat step 16 for 3 rd trial, but place magnets 3/8 inch (1 cm) apart on the left side of loop

Magnets Pencil Battery Wire

Height of 1 st touch (cm) Height of 2 nd touch (cm) Height of 3 rd touch (cm) Average Trial 1 1.71.8 Trial 2 1.61.71.81.7 Trial 3 1.91.71.61.7

IIn my experiment, my first trial’s average jump height was 1.8 cm. My second trial’s average jump height was 1.7 cm. The third trial’s average was, also, 1.7 cm. The first trial’s average had the highest jump height out of all three trials.

What kind of movement will a magnet produce in a current – carrying wire is my question. My hypothesis is that the magnet will cause the current – carrying wire to jump. I thought this because it was the first thing that popped in to my mind while I was thinking about this. Also, I was weighing out my options, and I felt that the movement of jumping had a high likeliness. The reason I chose this project was because I was curious about whether or not the wire would move or not.

I accept my hypothesis for my question; this is because it was proven true. According to my data, in all three of my trials the wire jumped at different heights. The trial that had the highest average jump was my first trial, and my other two trials had the same average. The results I got from my experiment were accurate, also, because I was careful about keeping my constants the same in all three trials and precisely measuring the wire’s jump height.

If I were to perform this experiment again, I would change many different components of the experiment. An example would be the type of wire I would use; in this experiment, I used 18 – gauge copper wire, but I would change that to 15 – gauge aluminum wire. Another possible change to this experiment is the type of battery I would use or the space between the magnets could be changed to 2½ cm. Also, I could use weaker magnets.

To conclude, a current – carrying wire will jump under a magnetic force. Based on the trials I have done and all the data I have gathered, I have been able to succeed at making a wire jump. Also, I have proven my hypothesis correct. Now that I have done this experiment, others may try to attempt this experiment to see if they get similar results, or they could even modify it and experiment with different materials.

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