SPSS has three different sets of commands for producing graphs. The easiest to learn and use are the oldest legacy graphing commands. They give you graphs with a default visual style (colors used, weight of lines, size of type, etc) that can be customized by hand.
Storing Energy in a Capacitor. The energy stored on a capacitor can be expressed in terms of the work done by the battery. Voltage represents energy per unit charge, so the work to move a charge element dq from the negative plate to the positive plate is equal to V dq, where V is the voltage on the capacitor.
In electromagnetism, charge density is a measure of electric charge per unit volume of space, in one, two or three dimensions. More specifically: the linear, surface, or volume charge density is the amount of electric charge per unit length, surface area, or volume, respectively.The respective SI units are C Â· m â1, C Â· m â2 or C Â· m â3.ontinuous charge distribution. The volume charge density Ï is the amount of charge per unit volume (cube), surface charge density Ï is amount per unit surface area (circle) with outward unit normal nÌ, d is the dipole moment between two point charges, the volume density of these is the polarization density P.