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Unformatted text preview: 47. The deﬁnition of displacement current is Eq. 3234, and the formula of greatest convenience here is
Eq. 3241:
2π (0.0300 m) 2.00 × 10−6 T
2π r B
= 0.30 A .
=
id =
µ0
4π × 10−7 T · m/A ...
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 Fall '08
 SPRUNGER
 Physics, Current

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