In: Physics
Suppose that a parallel-plate capacitor has circular plates with
radius R = 28 mm and a plate separation of 5.5 mm. Suppose
also that a sinusoidal potential difference with a maximum value of
140 V and a frequency of 77 Hz is applied across the plates; that
is,
V = (140 V) sin[2π(77 Hz)t].
Find Bmax(R), the maximum value of the
induced magnetic field that occurs at r = R.