Page 11 - 6- اجابات نيوتن
P. 11
إجابات
الفصل
الثانى
N2 = R2 = I1 (2)
N1 R1 I2 (2) (1)
B2 0.5 I2 = I1 5
B1 = 0.3 = I1 I2 =3
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Bt = B + B
5 10-5 = NI1 I2
2d
5 10-5 = 4 107 20 10 4 107 I2
2 2 0.2
I2 = 10A
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R= = 2.8108 = 2.8 10-3
A 10 10 6
I= VB 3
R 2.8 10 3
F = BI = 10-3 3 = 1.07 N
2.8103
4.28 N
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