Electric Potential Energy

Presentation on theme: "Electric Potential Energy"— Presentation transcript:

Unit 1 Day 14: Electric Potential and the Electric Potential Difference
Electric Potential Energy Work done by the Electrostatic Force on a charge The Electric Potential The Electric Potential Difference The Electric Potential of a Charged Conducting Sphere

Electric Potential Energy
The Electrostatic Force is a Conservative Force The Work done by the Electrostatic Force is: The work done getting a proton from point a to b by the electrostatic Force is:

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:

The Velocity of an Electron in a CRT
Cathode Anode ΔV Solving for the final velocity:

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.

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:

The Electric Potential of a Charged Conducting Sphere
The E-Field inside the conducting sphere is zero, and outside is an inverse square law

The Electric Potential of a Charged Conducting Sphere
The electric potential inside the conducting sphere is constant, and outside is an inverse relationship.