1. True or false? If there is relative motion between a conductor and a magnetic field, a voltage will be induced into that conductor.

2. What causes magnetic interference?

3. Give one example of where we hear magnetic interference in everyday life.

4. How do we prevent magnetic interference? How does it work?

5. Give two examples of permanent magnet uses in aircraft.

6. What are the four "do nots" for taking care of permanent magnets?

7. Where should a permanent magnet be kept?

8. How an electro-magnet is created ?

9. Draw a picture of a solenoid. What part moves?

10. Draw a picture of a relay. What part moves?

11. What is the basic operating principle of a D'Arsonval meter?

12. What are the three main parts of a D'Arsonval meter?

13. When the direction of current flow through a coil is known, how do you determine the polarity of the coil?

14. How does the pull of a magnet of a piece of steel at 1-in distance compare with the pull at 2-in distance?

15. Compare a solenoid with an electromagnet.

16. What conditions are necessary to produce electromagnetic induction?