Assume that a parallel-plate capacitor consists of circular plates having radius R = 39 mm and a plate separation of 6.5 mm. Assume that as well that a sinusoidal potential difference having a maximum value of 130 V and a frequency of 63 Hz is exerted across the plates; that is,
V = (130 V) sin[2p(63 Hz)t].
Determine Bmax(R), the maximum value of the induced magnetic field which takes place at r = R.