Capacitors A device for storing an electrical charge is called a capacitor or electrical condenser. Capacitors in their simplest form consist of two metal plates, which are separated by a nonconducting layer called the dielectric. As one plate gets charged with a direct- current such as a positive charge, the other plate will be charged with the opposite sign such as a negative charge. The larger the capacitor, the more electrically charge it can absorb. Capacitors are limited to the amount of electrical charge, but they function well as conductors in alternating- current circuits. One example of this is called the Leyden jar, which has the two plates that are coated with a metal- foil on both sides. The coated plates sit in a glass jar, which then acts as a dielectric. Capacitors are produced in a wide variety of forms. Each form....

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