a WRITE THE LETTER of the correct answer on the blank, 1 All of the following can be picked up by a magnet except Aluminum b cobalt c. nickel d iron 2 How are electromagnets different from magnets? a Magnets can be turned on/off c. magnets are more powerful You can turn an electromagnet on/off d magnets have a North and South poles 3 What kind of magnet can be turned on and off? @ Refrigerator magnet b. electromagnet c. magnelite d iron 4 What is the name of the force that attracts or repels materials? a Current b electricity magnetism d pull 5 Which of the following is NOT part of electromagnet? a Wire biron c toothpick d power source 6 In order for an electromagnet to be formed an current must pass through a coil of wrapped a Wire, iron, electric b electric, wire, iron c. iron, electronic, wire d. iron, bolle, straw 7. In order to make an electromagnet, you need a a Battery, nail & magnet b. battery, wire & nail c. magnet, nail & wire d all of the at 8 What would we call a nail that can pick up a paperclip because it is touching a magnet? a Temporary magnet b poles c. force d. detector 9. All are parts of an electromagnet except one which me is it? a Swalch b conductor Ciron core d. source of electrical energy 10. When you thrust a magnet into a coil occurs in the wire a Light b. color C. sound d. electron flow 11. Which of the following devices make use of electromagnet? a Telephone b. electric bell c. electric buzzer d all of the above 12. Which of the following produces electric energy? a Wire b bicycle c.generator d galvanometer 13 Which of the following statements is true? a Magnets attract pieces of paper c. magnets can be used to generate electricity b. Magnets can only pull and not push d. magnets cannot be used to generate elect 14. Why is wire used in an electromagnet coiled? a It has more force c. it controls the field of attraction b. It controls the flow of electricity d it makes the electromagnet stronger 15 What happen when a part of an electromagnet is disconnected? a itloses its magnetism c. the electromagnet becomes a permanent b. Electricity continues to flow through it d. there is an increase in the number of mat​