![]() ![]() The field around a long straight wire is found to be in circular loops. Hall probes can determine the magnitude of the field. As noted before, one way to explore the direction of a magnetic field is with compasses, as shown for a long straight current-carrying wire in Figure 1. Magnetic fields have both direction and magnitude. Magnetic Field Created by a Long Straight Current-Carrying Wire: Right Hand Rule 2 How does the shape of wires carrying current affect the shape of the magnetic field created? We noted earlier that a current loop created a magnetic field similar to that of a bar magnet, but what about a straight wire or a toroid (doughnut)? How is the direction of a current-created field related to the direction of the current? Answers to these questions are explored in this section, together with a brief discussion of the law governing the fields created by currents. Indeed, when Oersted discovered in 1820 that a current in a wire affected a compass needle, he was not dealing with extremely large currents. How much current is needed to produce a significant magnetic field, perhaps as strong as the Earth’s field? Surveyors will tell you that overhead electric power lines create magnetic fields that interfere with their compass readings. Use the right hand rule 2 to determine the direction of current or the direction of magnetic field loops.Calculate current that produces a magnetic field.Now, enter the values appropriately and accordingly for the parameters as required by the Number of Coils Spread together Closely (N) is 4, Magnitude of Current (I) is 8 and Length of Coil (L) is 10.Īs you can see from the screenshot above, Nickzom Calculator– The Calculator Encyclopedia solves for the magnetic field strength and presents the formula, workings and steps too. ![]() The screenshot below displays the page or activity to enter your values, to get the answer for the magnetic field strength according to the respective parameter which is the Number of Coils Spread together Closely (N), Magnitude of Current (I) and Length of Coil (L). Now, Click on Magnetic Field Strength under Magnetic Properities Now, Click on Magnegtic Properities under Materials and Metallurgical Once, you have obtained the calculator encyclopedia app, proceed to the Calculator Map, then click on Materials and Metallurgical under Engineering. To get access to the professional version via web, you need to register and subscribe to have utter access to all functionalities. You can get this app via any of these means: To get the answer and workings of the magnetic field strength using the Nickzom Calculator – The Calculator Encyclopedia. First, you need to obtain the app. Nickzom Calculator – The Calculator Encyclopedia is capable of calculating the magnetic field strength. Therefore, the magnitude of current is 21.Ĭalculating the Length of Coil when the Magnetic Field Strength, the Number of Coils Spread together Closely and the Magnitude of Current is Given.įind the length of coil when the magnetic field strength is 5, the number of coild spread together closely is 12 and the magnitude of current is 10. N = Number of Coils Spread together Closely = 12 Therefore, the number of coils spread together closely is 4.Ĭalculating the Magnitude of Current when the Magnetic Field Strength, the Number of Coils Spread together Closely and the Length of Coil is Given.įind the magnitude of current when the magnetic field strength is 18, the number of coils spread together closely is 12 and the length of coil is 14. Therefore, the magnetic field strength is 3.2 A/m.Ĭalculating the Number of Coils Spread together Closely when the Magnetic Field Strength, the Magntitude of Current and the Length of Coil is Given.įind the number of coils spread together closely when the magnetic field strength is 10, the magntitude of current is 5 and the length of coil is 2. N = Number of Coils Spread together Closely = 4 N = Number of Coils Spread together Closelyįind the magnetic field strength when the number of coils spread together closely is 4, the magntitude of current is 8 and the length of coil is 10. ![]() The formula for calculating magnetic field strength: To compute for magnetic field strength, three essential parameters are needed and these parameters are Number of Coils Spread together Closely (N), Magnitude of Current (I) and Length of Coil (L). The magnetic field strength is illustrated by the image below. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |