energy associated with electrical interactions. a light, a CD player, or an electric appliance, your calculation energy, an indispensable ingredient of our In Chapters 6 and 7 we introduced the concepts of context of mechanics; now we’ll combine these learned about electric charge. electric forces on the particle. This work can always be expressed rental energy. Just as gravitational potential energy of a mass above the earth’s surface. electric the position of the charged particle in the electric electric potential energy using a new concept called simply potential. In circuits a difference in potential often called voltage. The concepts of crucial to understanding how electric circuits work  applications to electron beams in TV picture  accelerators. and many other devices.

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