Magnetic Fields Activity: Mamer. ... ... .0 For this activity, you will be looking at factors that affect the magnetic field around a wire. Website: Magnetic Field from a Wire Lab Click the begin button to enter the lab. When you get to the lab: click the field strength button. Effects on Location: 1. Move the location of field sensor, up and down. What do you notice about the magnetic field strength? How does that corollate to the field lines? 2. Move the location forward and backward? What do you notice about the magnetic field strength? How does that corollate to the field lines? Write a summary sentence about location and magnetic field strength. Effect on Direction (Electron Flow) 3. Change from convectional current to electron flow. What do you notice about the electron movement? 4. What do you notice about the field strength? Effect on Current: 5. Move the current up and down. What effects does the current have on the magnetic field? Overall Summary: 6. What is the greatest reading you can get on the vernier instrument? Explain what you did and what your reading of each measurement was