Study with the several resources on Docsity
Earn points by helping other students or get them with a premium plan
Prepare for your exams
Study with the several resources on Docsity
Earn points to download
Earn points by helping other students or get them with a premium plan
A chapter from a textbook on electricity and electromagnetism, focusing on the concepts of electric potential and electric potential energy. It includes goals, topics, quizzes, examples, and formulas to help students understand these concepts. The units of electric potential difference are volts, and the electric potential inside a capacitor decreases inversely with the distance from the negative plate, or decreases inversely with the square of the distance from the negative plate, depending on the specific situation.
Typology: Study notes
1 / 33
This page cannot be seen from the preview
Don't miss anything!
Electric Potential understand electric forces,electric fields allowed us tothermal energy. Just aselectric energy into light andbulbs are transforming At any time, millions of light
(^) allows us
Chapter Goal: energy.to understand electric
(^) To calculate
and electric potential energy.and use the electric potential
E. HenrysD. VoltsC. FaradsB. Potentiometers A. Amperes
/m.
/m.
negative to the positive plate.
C. decreases linearly from the negative to the positive plate.
D. decreases inversely with distance from the negative plate.
E. decreases inversely with the negative plate.square of the distance from the
The (^) electric potential energy
(^) of charge
(^) q (^) in a uniform
where electric field is
(^) s is measured from the negative plate and
(^) U (^0) is the
potential energy at the negative plate (
s (^) = 0). It will often
be convenient to choose
(^) U (^0) = 0, but the choice has no
physical consequences because it doesn’t affect
(^) U elec , the
change
(^) in the electric potential energy. Only the
(^) change
(^) is
significant.
Copyright © 2008 Pearson Education, Inc., publishing as Pearson Addison-Wesley.
Consider two point charges,
(^) q (^1) and (^) q (^2) , separated by a
distance
(^) r. The electric potential energy is
This is explicitly the energy of
(^) the system
, not the energy of
just (^) q (^1) or (^) q (^2).
approaches zero asNote that the potential energy of two charged particles
(^) r (^) .
