Simple Electric Motor Project: Investigating an Electromagnet (Component 1)

Name______Date______Score______/30

Electromagnet:

  1. Hypothesis what will happen to the strength of the electromagnet as you increase the loops of wire around the nail.
  2. Must be formulated before you begin.
  3. Must be in complete sentence form.
  1. Wrap a wire 10 times around a 20 penny nail.
  2. Connect the wire to the terminals of the battery.
  3. Use the magnets to pick up paper clips (or BBs).
  4. Record how many you picked up at once.
  1. Repeat the above procedure by wrapping the wire 20, 30, and then 40 times around the nail.
  2. Record your values and graph your results
  3. Answer questions on sheet.
  4. Have teacher sign that you electromagnet worked.

Hypothesis (1 pt):______

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Materials (3 pts):______

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Procedure (3 pts):______

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Data / Results:

Number of turns of wire / Number of objects picked up
10
20
30
40

- Create a line graph on the grid to the

right using the data from the chart. (4 pts)

- Be sure to properly label.

(title, x, and y axes)(3 pts).

On your graph, what is the independent variable?(1pt.)______

On your graph, what is the dependent variable?(1pt.)______

Draw a sketch of your electromagnet. (5 pts)

-Include the nail, the wire, and the battery.

-Label the positive and negative terminals.

-Indicate the flow of electrons with an arrow.

-Use color would be great!

Your conclusion should be a look back to your results to see if they verified or falsified your hypothesis.

(Conclusion must be in sentence form.)

Conclusion (1pt):______

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CLEARLY Answer the following questions about an electromagnet:

1. What is a single wire wrapped into a cylindrical wire coil called (not electromagnet)?______

2. How is the number of objects that were picked up related to the magnetic force?______

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3. How is the strength of the magnetic force exerted by an electromagnet related to the number of turns of wire?

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4. Use your graph to predict how many objects a nail wrapped with 60 turns of wire will pick up.______