Capacitors, Capacitance, Electric Field, Voltage, Energy Stored, Example – Physics

This video explains what a capacitor is and its main purpose or use in simple words, including the capacitance equation which depends on charge, and different capacitor geometries such as coaxial cables and concentric spheres.

0:00 Intro to capacitors, capacitance
6:09 Deriving the capacitance from the electric field and potential
10:18 Electric potential energy stored in a capacitor
13:19 Capacitor with concentric spheres, capacitance
17:31 Capacitance of a coaxial cable (coaxial cylinders)
22:02 Worked example on capacitors