Presentation on theme: "Electric Potential Energy"— Presentation transcript:
1 Unit 1 Day 14: Electric Potential and the Electric Potential Difference Electric Potential EnergyWork done by the Electrostatic Force on a chargeThe Electric PotentialThe Electric Potential DifferenceThe Electric Potential of a Charged Conducting Sphere
2 Electric Potential Energy The Electrostatic Force is a Conservative ForceThe Work done by the Electrostatic Force is:The work done getting a protonfrom point a to b by the electrostaticForce is:
3 The Electric Potential Define the Electric Potential as the electric potential energy per unit charge:This represents a voltage, SI Units: Volts (1 Volt = 1 Joule / Coulomb)The Potential Difference between points a and b is:
4 The Velocity of an Electron in a CRT Cathode AnodeΔVSolving for the final velocity:
5 Basis for the Relationship between the Electric Field and Potential Difference Work done by the electrostatic force is equivalent to the change in the object’s potential energy.
6 The Electric Potential of a Charged Conducting Sphere For a charged conducting sphere, the electric potential at a radial distance of r away from the center of the sphere:
7 The Electric Potential of a Charged Conducting Sphere The E-Field inside the conducting sphere is zero, and outside is an inverse square law
8 The Electric Potential of a Charged Conducting Sphere The electric potential inside the conducting sphere is constant, and outside is an inverse relationship.