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102. The magnetic flux is

Φ

B

=

BA =



µ

0

i

0

N

2πr



A

=



4π

× 10

7

H/m



(0.800 A)(500)(5.00

× 10

2

m)

2

2π(0.150 m + 0.0500 m/2)

=

1.15

× 10

6

Wb .


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