Page 10 - 6- اجابات نيوتن
P. 10
نيوتن فى تدريبات الفيزياء
1 1 r1 (1 + ) = r2
r2 r1 ----------------------------------------------
r1
r2 1
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B = NI
1.2 10-3 = 4 10-7 300 I
0.22
I = 0.7 A
m = BA = 1.2 10-3 25 10-4 = 3 10-6 Wb
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B = NI
14 10-5 = 4 10-7 56 I
10 10-2
I = 0.1989 A
NI
B= 2r
B = 4 10-7 56 0.1989
B = 7 10-5 T 2 10 10-2
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B1 = N1I1 B2 = N2I2
0.5 0.3
B2 = 0.5 I2N2 (1)
B1 0.3 I1N1
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