1Ch 17: Electric Potential Like with mechanics, energy is usefulconcept when dealing with electricity Change in potential energy is equal towork doneConservation ofEnergyElectric Potential electric potential or potential electric potential energy per unit charge potential difference, V only difference in potential energy ismeaningful Volt: 1 V = 1 J/CElectron Volt, a Unit of Energy electron volt (eV) Joule is very large for dealing w/electrons,atoms and molecules 1 eV = qe V = (1.6 x 10-19 C)(1.0 V)1 eV = 1.6 x 10-19 JCh 17: Problem 1 How much work does the electric fielddo in moving a -7.7 µC charge from theground to a point whose potential is +55V higher?Electric PotentialWhere will e- move ifreleased?Analogy to Gravitational Potential2Ch 17: Problem 3 How much kinetic energy will anelectron gain (in joules and eV) if itaccelerates through a potentialdifference of 23,000 V in a TV picturetube? What is its final velocity?Electric PotentialElectric Potential & Electric Field For a uniform electric fielduniform electricfieldEquipotential Lines connect points in space at same potential equipotential surface is perpendicular toelectric field linesElectric Field & Equipotential Lines Draw field lines and equipotential linesfor the following charge distributions+Electric Field & Equipotential Lines Draw field lines and equipotential linesfor the following charge distributions-3Electric Field & Equipotential Lines Draw field lines and equipotential linesfor the following charge distributions- -Equipotential Lines Draw gravitational field lines and equipotentiallines around the earth.Electric Potential of Point Charge Set V=0 at a distance of infinityThink-Pair-Share which set has a positive potentialenergy? the most negativepotential energy? which set requiresthe most work toseparate thecharges to infinity?Ch 17: Problem 14 What is the electric potential 15.0 cmfrom a 4.00 x 10-6 C point charge?Ch 17: Problem 17 Draw a conductor in the shape of afootball. This conductor carries a netnegative charge, -Q. Draw in a dozenelectric field lines and two equipotentialsurfaces.4Ch 17: Problem 19 What is the potential at point A, takingV=0 at a great