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A parallel plate capacitor with circular plates of radius R=18 cm and plate separation d=7 mm is being charged at the rate of 4.5 C/s.
a) What is the displacement current through a circular loop of radius r=5.5 cm centered on the axis of the capacitor?
b) What is the displacement current through a circular loop of radius r=23 cm centered on the axis of the capacitor (note that this radius is bigger than the radius of the capacitor)?
c) What is the magnitude of the magnetic field between the capacitor plates at a radius r=5.5 cm from the axis of the capacitor?
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