CHAPTER 12 QUIZ

ELECTROMAGNETISM

1. Is the direction of flux correctly labeled for the electromagnets in the following drawing?

2. Which of these coils is the strongest?
         A has 22 turns and 5 amperes.
         B has 37 turns and 3 amperes.
         C has 17 turns and 9 amperes.

3. How can you increase a coil's strength without changing the construction?

CHAPTER 12 ANSWERS

ELECTROMAGNETISM

1. A: correct.  B: incorrect.  C: incorrect.  D: correct.

2. C is the strongest.

3. Increase the coil's current.