פרקטיקות שדה מגנטי 3

מביטוי הכוח המגנטי הפועל על צלע ab כתלות בזרם הסילונית «math style=¨font-family:Tahoma¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨20px¨»«msub»«mi mathvariant=¨bold¨ mathcolor=¨#0000FF¨»I«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#0000FF¨»2«/mn»«/msub»«/mstyle»«/math»:

ניתן לקבוע שביטוי השיפוע בגרף המתאר את הכוח כתלות בזרם «math style=¨font-family:Tahoma¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨20px¨»«msub»«mi mathvariant=¨bold¨ mathcolor=¨#0000FF¨»I«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#0000FF¨»2«/mn»«/msub»«/mstyle»«/math» הוא: 

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נשווה בין ביטוי השיפוע לערכו ונחשב את הזרם «math style=¨font-family:Tahoma¨ xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mstyle mathsize=¨24px¨»«msub»«mi mathvariant=¨bold¨ mathcolor=¨#0000FF¨»I«/mi»«mn mathvariant=¨bold¨ mathcolor=¨#0000FF¨»1«/mn»«/msub»«/mstyle»«/math»:

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לכן , עוצמת הזרם במסגרת המוליכה היא 2 אמפר.