ch30-p039 - 39. The magnetic field B can be expressed as bg...

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39. The magnetic field B can be expressed as Bt B B t bg b g =+ + 01 0 sin , ωφ where B 0 = (30.0 T + 29.6 T)/2 = 29.8 T and B 1 = (30.0 T – 29.6 T)/2 = 0.200 T. Then from Eq. 30-25 E dB dt r rd dt BB t B r t = F H G I K J + = + 1 22 1 2 0 1 0 cos . ω We note that = 2 π f and that the factor in front of the cosine is the maximum value of
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