AP Physics 2 / Unit 10: Electric Force, Field, and Potential
10.7 Conservation of Electric Energy
Notes
Electric potential energy can turn into kinetic energy: $\displaystyle q\Delta V=\frac{1}{2}mv^2$ (starting from rest).
Practice
An electron is accelerated through 100 V. Its kinetic energy:
$eV=1.6\times10^{-19}\times100$.
A positive charge released in a field moves toward:
Losing potential energy.
As a charged particle accelerates in a field, the total energy:
Conservation of energy.
Ready for more? Take the Unit 10 test.