[填空题]
The variable capacitance of a5h*4jakyeo3ctl* r) 0 m3 nrkun old radio tuner consists k 3dtrh fo9:)vts)*ynof four plates connected together placed alternately between four other plates, also connected together (Fig. Below). Each plate is separated from its neighbor by 1.5 mm of air. One set of plates can move so that the area of overlap of each plate varies from s))vrot3ydkf :n9 t*h$2.0cm^2$ to $9.5cm^2$
(a) Are these seven capacitors connected in series or in parallel?
(b) Determine the range of capacitance values. from pF to pF
