Building an Electromagnet Worksheet Answers 1 Draw the battery, wire coil and magnetic field Label the positive and negative ends of the
(c) Explain how you could use a plotting compass to investigate the magnetic field around a bar magnet You may draw a diagram to help your answer (3)
Define an electromagnet? Ans An electromagnet is an object that acts like a magnet, but its magnetic force is created and controlled by electricity--thus the
an electromagnet has a magnetic field predict which electromagnet will Use your electromagnet diagram from Part 1 to answer the questions
e A student is asked to find the magnetic field pattern of a permanent bar magnet Describe two methods the student could use to find the magnetic field
A 13 B 14 magnetism 15 currents 16 magnetic field 17 voltage 18 electromagnet 19
(a) Donna put a paper cup into a glass beaker She glued a magnet in the bottom of the paper cup She glued another magnet in the bottom of the beaker
![[PDF] Building an Electromagnet Worksheet Answers - Teach Engineering](https://pdfprof.com/EN_PDFV2/Docs/PDF_3/86772_3cub_mag_lesson2_activity1_electromagnet_worksheet_answers.pdf.jpg "[PDF] Building an Electromagnet Worksheet Answers - Teach Engineering")
86772_3cub_mag_lesson2_activity1_electromagnet_worksheet_answers.pdf Team Name: ________________________________________ Date: ______________ _____ Names: _____________________________ and _______________________________ _____
Building an Electromagnet Worksheet Answers
1. Draw the battery, wire coil and magnetic fi
eld. Label the positive and negative ends of the battery, and the poles of the coil's magnetic field.
Diagram should look like this
Students can use arrows for the magnetic fiel
d.
2. Describe what happens if you hold a nail or paper clip near the coil.
The object vibrates, or gets pulled in
to the coil.
3. Reverse the connection of the coil. Draw the battery, coil and magnetic field. Label the
positive and negative ends of the battery, and the poles of the coil's magnetic field. Physical objects are the same, but the magnetic field has a reversed polarity - the poles are switched.
4. Describe what happens if you hold a nail or paper clip near the coil.
The object vibrates, or gets pulled into the coil.
5. How did you test the strength of your electromagnet?
Answers will vary; check individually.
6. Can your electromagnet pick up paper clips when the current is disconnected?
No
Magnetism: Lesso
n 2, Building an Electromagnet Activity - Worksheet Answers 1
Electromagnet Engineering
7. What did you modify in building your electromagnet (number of coils or size of battery)?
Answers will vary.
8. Fill in the table below with how many paper clips your electromagnet was able to pick up.
Electromagnet How Many Paperclips Did It Pick Up?
With 10-12 coils
Answers will vary.
With fewer coils
How many coils? _________
With more coils
How many coils? _________
With a different battery #1
What size battery? _________
With a different battery #2
What size battery? _________
9. Write a sentence about how changing the number of coils or battery size affects how many
paper clips the electromagnet could pick up. While answers will vary, in general, students should show an understanding that more coils and/or a larger battery increases magnetic force, as shown by being able to pick up more paper clips.
10. What are some ways that engineers might be able to use electromagnets?
Answers will vary. Engineers use electromagnets to create motors, which are found in everyday use in cars, appliances, clocks and computers. Source of page 1 image: Copyright © Alex Dzierba, High Energy Physics, Indiana University, http://dustbunny.physics.indiana.edu/~dzierba/Scidemo/. Used with permission. Magnetism: Lesson 2, Building an Electromagnet Activity - Worksheet Answers 2