Modern computer memories use parallel-plate capacitors to store information, and these capacitors...

Modern computer memories use parallel-plate capacitors to store information, and these capacitors are the basic elements of a random-access memory (RAM) chip. Assume one of these capacitors has plates with an area of L ×L, where L =1.0 μm (=1.0 ×10^-6 m), and a plate separation of d =10 nm (=1.0 ×10^-8 m). (a) Find

the capacitance of such a capacitor. (b) Calculate the amount of charge that must be placed onto the plates to obtain a potential difference of 5.0 V across the plates. (c) How many electrons does this charge correspond to? we analyzed a parallel-plate capacitor as might be found in an integrated circuit (RAM chip), but we omitted that such a capacitor would usually contain a dielectric between the plates. This dielectric is composed of SiO₂and has a dielectric constant close to that of glass. What is the capacitance of the RAM capacitor when it is filled with SiO₂?