Homemade capacitors can be made from two back-to-back parallel pie pans, with a 0.50-mm-thick piece of...
13) A capacitor is made from two 2-cm-diameter coins separated by a 0.2-mm-thick piece of paper (dielectric constant K-5). A 12-V battery is connected to the capacitor. a) How much charge is on each coin? (5'). b) How much energy stored in the capacitor? (extra 3')