magnetic force lab report

Northwest Vista College Physics II Natural & Physical Sciences PHYS Date: Names: Lab Checklist:  Make sure that your final lab submission has the following parts before the deadline. Please see lab procedure for requirements for each part. 1. Data Tables – all four (4) data tables complete with correct units and appropriate significant figures (SF) 2. Data Graphs – graphs for all four (4) tables complete with chart title, y-axis title, x-axis title, linear trendline, and linear trendline equation 3. Analysis Questions  All analysis questions answered appropriately and as instructed in at least two complete sentences, unless otherwise instructed. Re-written by Sean McKeever - Further revised by Josh Alquiza –

Northwest Vista College Physics II Natural & Physical Sciences Analysis Questions:  Please answer the following questions in at least two complete sentences , unless otherwise indicated. 1. Based on your data and graphs, were you able to confirm the scalar formula for magnetic force, F B = ILB sin θ , or not? Please explain your results. Scalars are quantities that only have magnitude (or size), while vectors have both magnitude and direction. All of our graphs were linear and continued increases in magnitude but never switched directions, as they all kept in a line. 2. Please complete the following statements by either highlighting or marking the correct relationship between magnetic force and each variable below:  F B is [ directly| inversely ] and [ linearly| non-linearly ] related to θ .  F B is [ directly| inversely ] and [ linearly| non-linearly ] to L .  F B is [ directly| inversely ] and [ linearly| non-linearly ] to I .  F B is [ directly| inversely ] and [ linearly| non-linearly ] to B .  F B is [ directly| inversely ] and [ linearly| non-linearly ] to sin θ . 3. Of all the variables in the formula, which one is not linearly related to the magnetic force on a current-carrying wire?  I - the current flowing through the wire ¡ θ - the angle between the wire and the magnetic field Re-written by Sean McKeever - Further revised by Josh Alquiza

Northwest Vista College Physics II Natural & Physical Sciences ¤  6. Complete the sentence by selecting or highlighting one option below. "Theoretically, the y-intercepts for this lab _____________________.  ...should all be zero except for the F B vs. sin θ graph.  ...should all be zero except for the F B vs. L graph. ¤ ...should all be zero.  ...should all be zero except for the F B vs. B graph.  ...should all be zero except for the F B vs. I graph. 7. Were there y-intercepts in any of your graphs? Should there have been ones? Could they be attributed to error or not? Please explain your answer and also mention at least one possible source of error for this particular lab. No there were not any y-intercepts in any of my graphs, and there shouldn’t be any y-intercepts because then our graphs would not be linear. Once y- intercepts take place the graph it wouldn’t be scalar formula it would become vector. 8. Was the magnetic force dependent on the orientation of the magnet? Yes or no? Highlight or select your answer below. Re-written by Sean McKeever - Further revised by Josh Alquiza

Northwest Vista College Physics II Natural & Physical Sciences  No, the orientation (North-South) of the magnet did not affect the data. ¤ Yes, the orientation (North-South) of the magnet changed the data. 9. Based on your answer to the previous question and your experience doing this lab, please defend and explain your answer. Yes , magnetic apply forces on different magnetic material . Compass is also made up of magnetic material . hence the magnet will apply force on magnetic material . therefore , Yes , the orientation of magnet changed the data . 10. For this lab, all the graphs were plotted with the mass differences on the y-axis even though the lab is about [magnetic] force. Why was it sufficient to use and plot all your data against mass (or mass differences) values instead of actual force (Newtons) values? ¤ It's because the changes in magnetic force were measured as changes in mass by the digital scale.  It's because mass is multiplied by a constant (g = 9.81 m/s 2 ) to get force due to gravity.  It's because mass is directly related to weight (force due to gravity).  All these choices are correct! 11. What are some practical applications of this magnetic force equation in real life? Please take note that this type of magnetic force involves electric current! Please give at least one example and briefly explain Re-written by Sean McKeever - Further revised by Josh Alquiza