Lesson Plan for Making a Speaker Laboratory - StumbleUpon. ©1995 The Regents of the University of California by Regan Lum Introduction: A speaker is a device that converts an electronic signal into sound. The speaker you will build (see figure 1) consists of a Styrofoam or paper cup, a coil of wire, a permanent magnet, and a signal source. The electronic signal goes through the coil and creates a varying electromagnet. The attraction and repulsion between the electromagnet and the permanent magnet cause the cup to vibrate and produce sound. figure 1 Purpose: In this laboratory, you will explore how a speaker works. Materials: 1 permanent magnet 2 feet of wire 1 pencil tape or glue 1 Styrofoam or paper cup 1 signal source (tape player) 1 plug with alligator clips for tape player Procedure: Assemble material as shown in figure 1.
Leaving about 10 centimeters on the end, wrap the wire around a pencil to make a wire coil and tape or glue it to the bottom of the cup. Conclusion Does the volume control on the tape player work on your speaker? Hapuriainen on deviantART. Operation Beautiful. MuggleNet | The World's #1 Harry Potter Site - Deathly Hallows Movie, The Wizarding World, JK Rowling, and much more. FOUND Magazine | Find of the Day. 15 Different Ways To Tie Your Sneakers Pictures. Changes-channels.jpg (JPEG Image, 425x294 pixels)