Suppose that a parallel-plate capacitor has circular

Chapter , Problem 11

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Suppose that a parallel-plate capacitor has circular plates with radius R ! 30 mm and a plate separation of 5.0 mm. Suppose also that a sinusoidal potential difference with a maximum value of 150 V and a frequency of 60 Hz is applied across the plates; that is, V ! (150 V) sin[2p(60 Hz)t]. (a) Find Bmax(R), the maximum value of the induced magnetic field that occurs at r ! R. (b) Plot Bmax(r) for 0 / r / 10 cm.

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