Basic Electromagnetism P-16
Contents
1. Hold the nail about 5 mm from the magnetic field sensing part as seen in the picture If you see that the magnetic field is negative remove the wire from the nail and turn it 5 times to the other direction Click on the Table icon on the bottom part of the screen A table will be displayed for data record Change the Manual values column name to Number of winds clicking on the title of the column will allow you to do SO Experiment P 16 Basic Electromagnetism Ver 3 3 2 22 23 24 20 26 27 6 NeuLog EF Continue to turn the wire around the nail five more times place it at the same spot as before and click on the Single Step icon Ea Continue with the measurements according to the following Measurement Number of rumper wines table Open the knife switch Insert the number of winds into the Number of winds column Click on the Graph icon v Click on the Experiment Setup icon Ey and change the X axis to Number of winds Experiment P 16 Basic Electromagnetism Ver 3 3 2 7 NeuLog EJ 28 In order to focus on the desired range click on the Q zoom icon Q locate the mouse cursor at a point above the graph and press its left button keep it pressed and create a rectangle that includes the whole graph 29 Your graph should be similar to the following AGTET gD a rp e p comes Back Expenment Erase Single Run Save Setup Expenment Step Expenment Expenment Expenment2. A 15 BAJO ke BR BB Unzoom Zoom Zoom Select Line Show Grid Graph Table Point Area Fit Zone Width Functions 30 Save your graph 31 We can see that as the number of winds around the nail increases the magnetic field increases The current decreases over time because the batteries are running out Summary questions 1 What will happen to the magnetic field if we decrease the number of batteries in the experiment 2 Why are the magnetic field values negative when we turn the wire on the nail to the other direction 3 Point out two uses of electromagnets Experiment P 16 Basic Electromagnetism Ver 3 3 2
3. 1 NeuLog EF Experiment P 16 Basic Electromagnetism amp Objectives To learn about electromagnets To build an electromagnet with a nail a wire and additional electrical elements To investigate how the number of winds affect the magnetic field of the electromagnet Modules and Sensors PC NeuLog application USB 200 module 1 1 NUL 202 Current logger sensor NUL 214 Magnetic field logger sensor A Equipment and Accessories Circuit Board 1 6V cell holder 1 1 5 V battery type D 4 Knife switch 1 1 m electrical wire 1 Red 4 mm connector cable 1 Red crocodile clip cable 1 Black crocodile clip and 4mm 1 connector cable 100 mounted resistor 1 Large iron nail 1 The items above are included in the NeuLog Electricity kit ELE KIT Experiment P 16 Basic Electromagnetism Ver 3 3 2 2 NeuLog EJ Introduction Electromagnets are devices that create a magnetic field through the application of an electric current An electromagnet consists of a conductive wire wrapped around a piece of metal A current is introduced from a battery or another voltage source and flows through the wire This creates a magnetic field around the wire magnetizing the metal It is possible to turn the magnet on and off by completing or interrupting the circuit this is why electromagnets are so useful The atoms of certain metals such as iron nickel and cobalt each behave like tiny magnets They normally point in random d
4. ct the red crocodile clip cable to the electrical wire Experiment P 16 Basic Electromagnetism Ver 3 3 2 4 NeuLog EJ 8 Connect the other side of the electric wire to the black crocodile clip and 4 mm connector cable and then connect the 4 mm connector to the socket next to the writing at the left side of the 6 V cell holder 9 Place four 1 5 V type D batteries in the 6 V cell holder the side of the battery should be on the side of the cell holder Sensor setup 10 Connect the USB 200 module va to the PC g 11 Check that the current and the magnetic field A sensors are connected to the USB 200 module Note The following application functions are explained in short It is recommended to practice the NeuLog application functions as described in the user manual beforehand 12 Run the NeuLog application and check that the sensors are identified settings 13 Click on the On line Experiment icon to in the NeuLog main icon bar 14 This experiment is done in single step mode so the experiment duration and sample rate will not be set Experiment P 16 Basic Electromagnetism Ver 3 3 2 5 NeuLog EJ Testing and measurements 15 16 17 18 19 20 21 Rotate the magnetic field sensor to a point where the measured magnetic field is closest to zero the sensor measures the Earth s magnetic field Tightly turn the wire 5 times around the nail as shown in the picture below
5. irections and the magnetic fields tend to cancel each other The magnetic field produced by the wire wrapped around the core forces some of the atoms to point in one direction All of the tiny magnetic fields add together creating a stronger magnetic field As the current flowing increases the number of aligned atoms increases and the magnetic field becomes stronger This happens until all the atoms are aligned and the magnet is saturated then the magnetic field stays the same In this activity you will build an electromagnet and use a sensor to measure the magnetic field strength as a function of the number of wire winds You will use a current sensor to measure the current during the experiment Experiment P 16 Basic Electromagnetism Ver 3 3 2 3 NeuLog ES Procedure Experiment setup 1 Set up the experiment as shown in the picture below oe On xt 9 oF 3 Fes 2 Connect the knife switch to the middle of the circuit board while leaving it open 3 Connect the 10 resistor next to the knife switch one connector on the top row and the other on the second row 4 Connect the red cable of the current sensor next to the 10 Q resistor on the top row 5 Connect a red 4 mm connector cable to the left side of the second row and Its other side to the socket next to the 6 V writing at the 6 V cell holder 6 Connect the black cable of the current sensor to the red crocodile clip cable 7 Conne
Download Pdf Manuals
Related Search