need help with making the drawings for this lab

8:23 PM Mon Mar 27 Lab 09 Electromagnetic Induction1 v X Untitled Notebook (3) \\ Lab 09 Electromagn... Chapter 9. Electromagnetic Induction 51 a useless recording, as you can swap your connections to the galvanometer and the needle will now deect in the opposite direction. Essentially the only way to record any observations in this lab is through careful use of diagrams supplemented with text. In prior labs this was ideal, but in this lab it is mandatory. Look at Figure 9.1 for an example. Refer to Lab 8 on page 45: Current Balance writeup for the two options you may use for Right Hand Rules to include in your drawing. Galvanometer Magnet (Binside to right) Starts outside coil Moves to left, toward coil v As the magnet moves to the left and enters the coil, the magnetic field (pointing to the right) inside coil gets stronger. By Lenz's Law, the magnetic field induced inside the coil must point in the opposite direction (to the left), By the righthand-rule, current must flow up on the frontside of the coil (inside the coil, ngers point to the left). Current flowing up on the front side of the coil enters the (+) terminal of the galvanometer. Galvanometer needle deflects to right. Figure 9.1: One approach to drawing a single observation during this week. You may draw the RHR in other manners, but must include it in some style. Move the bar magnet in to, out of, or through the coil of wire. Using the galvanometer, you can demonstrate that an electrical current flows when you do this. Your goal for the end of the laboratory is to be able to explain how the needle will react if you move the bar magnet from one end of the coil completely through the other end without stopping (explain prior to performing, and then perform to verify explanation accuracy). Remember that, by convention, the magnetic eld lines external to a bar magnet go from the N pole to the S pole. Since magnetic eld lines are continuous, that is, they do not start or end anywhere, the eld lines inside the bar magnet must necessarily go from the S pole to the N pole. All the eld lines outside the magnet must be squeezed together as they pass through inside, going the opposite direction. If this is confusing, draw a simple diagram of a bar magnet, and add eld lines to your drawing both inside and outside the magnet, indicating the directions of the elds with arrows. You may still have your drawings from the Magnetic Fields lab previously which you can simply supplement with the internal eld lines. Just a reminder that electric and magnetic elds differ signicantly in this regard. Electric elds do begin and end somewhere. namely on electric charges. At this point scientists have yet to discover a single magnetic \"charge\" existing by itself, with magnetic eld lines emanating from it radially In this experiment you are supplied with a coil of wire, a bar magnet, and a sensitive ammeterialso called a galvanometer. Remember that the ammeter reads a positive value of current when the current enters the positive (+) input terminal and leaves through the negative () or common terminal. Students often record results in this lab as "We moved the magnet this way, so the needle moved left" which is analogous to the electric field of a point electric charge. The current understanding of the source of magnetism is the motion of electrons. This explanation makes a magnetic monopole impossible to exist, so if one were ever discovered it would cause significant changes in fundamental physics, and thus all more complicated physics as well. Be sure to check the pole designation of your bar magnet with a compass using the Earth's mag- netic field as a reference before beginning this experiment. Bar magnets can be remagnetized in strange ways by bringing them close to another magnet, so this check is important