A
parallel plate capacitor (Fig. 8.7) made of circular plates each of
radius R =
6.0 cm has a capacitance C =
100 pF. The capacitor is connected to a 230 V ac supply with a
(angular) frequency of 300 rad s−1.
(a)
What is the rms value of the
conduction current?
(b) Is
the conduction current equal to the displacement current?
(c) Determine
the amplitude of B at
a point 3.0 cm from the axis between the plates.