11-14-2016, 10:11 PM
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#4
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مؤسسة الشبكة
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بيانات اضافيه [
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رقم العضوية : 2
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تاريخ التسجيل : Jun 2013
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أخر زيارة : 01-14-2024 (07:13 PM)
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المشاركات :
724 [
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التقييم : 10
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الدولهـ
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الجنس ~
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لوني المفضل : Darkred
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Magnetism
36- The direction of a magnetic field is defined by the direction a compass needle points.
37- Magnetic fields point from the north to the south outside the magnet and south to north inside the magnet.
38- Magnetic flux is measured in webers.
39- Left hands are for negative charges and right hands are for positive charges.
40- The first hand rule deals with the B-field around a current bearing wire, the third hand rule looks at the force on charges moving in a B-field, and the second hand rule is redundant.
41- Solenoids are stronger with more current or more wire turns or adding a soft iron core.
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