Electro-Magnet Take Home Assignment

6. How can you we make electro-magnets stronger? (5 pts.)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________7. What material do magnets attract? Be specific (metal is not a good enoughanswer). (2 pts.)____________________________________________________________________________________________________________________________________8. What is a magnetic field? (2 pts.)____________________________________________________________________________________________________________________________________9. What is the future for electro-magnetism? What devices do they hope to be usedin? (5 pts.)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________10. Who discovered electro-magnets? When? (2 pts.)____________________________________________________________________________________________________________________________________11. How could you prove that when electric current passes through a wire it producesa magnetic field? (2 pts.)____________________________________________________________________________________________________________________________________12. What is a solenoid? _________________________________________________

13. An electromagnet has two poles. How can you switch the poles of an electromagnet?(2 pts.)____________________________________________________________________________________________________________________________________14. Are electro-magnets permanent magnets? How do you know? (3 pts.)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________15. How does a hard drive work? (5 pts.)________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________10 points will be deducted for each day this assignment is late.Due Date - ________________Points Deducted - __________Late Points Deducted - ______Total Score - ________/50