1- Determine the Area of this capacitor. 2- Deduce the value in micro Farad F of the capacitor. 3- Suppose that the upper face of this capacitor is moveable from x=0.25mm to x =1mm. Determine the rage of variation of the resulting variable capacitor (Cmax and Cmin). 4- Consider the following tuning circuit connected to an antenna, where C is a variable capacitor whose capacitance ranges from Cmin to Cmax. Antenna C: is the capacitor f 1 2VLC Impedance, Z Frequency L=2H: internal inductance of the antenna Resonance frequency Lower face A .....019839 A AWER Sea x=0.5 mm Front view Lamelle en Mica 1 mm Bottom view Figure 1. Mica capacitor. 0.5 mm B B Upper face 0.8 mm 0.1 mm