The Magnetism and Electricity Connection

What do you think?

We now know that moving charges (current) can create magnetic fields. Essentially, electricity can create magnets.

·  What other questions does this raise for you about the connections between electricity and magnetism?

For You To Do

Part I: You light up my life

1.  Examine the flashlight that works without batteries (kind of).

2.  What parts do you notice it has? Hint: think about what tools could help you detect what parts are there.

3.  Write a statement explaining how the flashlight works.

Part II: Demonstrations

4.  Your instructor will show you a demonstration using a galvanometer. Draw a picture of the galvanometer.

5.  What does the galvanometer detect?

6.  Draw a circuit diagram of the galvanometer setup.

7.  Explain what conditions cause the magnet to the affect the galvanometer.

Part III: Putting it all together.

8.  Now write a statement about the connection between electricity and magnetism:

9.  Now look at the hand generator. We can’t see everything inside, but what do you think is going on inside to create a current? Draw a picture and explain your idea.

10.  Explain how you think a hydroelectric power plant or a wind-powered generator might work. Draw a picture and explain your idea.