Charge Q = +4.00 mC is distributed uniformly over the volume of an insulating sphere that has radius R = 5.00 cm. What is the potential difference between the center of the sphere and the surface of the sphere?
Goals • To understand capacitors and calculate capacitance • To analyze networks of capacitors • To calculate the energy stored in a capacitor • To examine dielectrics and how they affect capacitance Introduction • How does a camera’s flash unit store energy • Capacitors are devices that store electric potential energy. • The energy of a capacitor is actually stored in the electric field. Capacitors and capacitance • Capacitors are devices that store electric potential energy. • The energy of a capacitor is actually stored in the electric field. • Any two conductors separated by an insulator form a capacitor • The definition of capacitance is C = Q/V . ab Parallel-plate capacitor • A parallel-plate ca
