9/8/2019 Potential Energy Equation
This physics video tutorial explains the concept of electric potential created by point charges and potential difference also known as voltage. It covers the relationship between charge, electric potential, voltage, electric potential energy, work, and kinetic energy. It contains plenty of examples and practice problems.Here is a list of topics:1.
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Electric Potential Definition - Electric Potential Energy Per Unit Charge2. 1 Volt = 1 Joule Per Coulomb - 1 Volt = 1J/C3.
Potential energy is a property of a system and not of an individual body or particle; the system composed of the Earth and the raised ball, for example, has more potential energy as the two are farther separated.
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Definition of Voltage - Electric Potential Difference Between Two Points4. Work, Charge, and Voltage Formula / Equation5. Positive and Negative Charges In an Electric Field Between Parallel Plates6. Electric Force, Speed, Kinetic and Potential Energy7.
How to tell if an Electric Field Will Do Positive or Negative Work on Charge as it moves toward the positive or negative plate8. How to calculate work and change in electric potential energy given charge in microcoulombs and voltage9. How to calculate speed or velocity given kinetic energy10.
How To Calculate The Acceleration of a Charge In an Electric Field Between Parallel Plates11. Electric Field, Voltage, and Distance Between Charged Parallel Plates12. Calculating Final Speed Given Voltage - Kinematics Formula13. Predicting the Sign of Work Using The Force, Velocity, and Displacement Vectors14.
How To Find Speed Given Kinetic Energy In Electron Volts15. Charge and Mass of an Electron16. How To Calculate Electric Field, Acceleration and Final Speed Given Voltage and Distance Between Parallel Plates17. Equation For Speed / Velocity and Voltage18. Units of Electric Field - Volt per meter and Newton per Coulomb - V/m, N/C19. Potential Energy and Electric Potential / Voltage Relationship20. Electric Potential vs Gravitational Potential Energy21.
Positive vs Negative Work, Speeding Up vs Slowing Down - Increasing / Decreasing Potential Energy and Kinetic Energy22. Electric Potential Gradient - Voltage and Distance In Parallel Plates23. Electric Potential Created By Point Charge24. Work Required to move a charge from point A to point B25. How to calculate the electric potential energy between two charges26. How to find the potential energy and work of moving a negative charge27.
How much work is required to bring two charges close to each other that were very far apart28. How to calculate the net electric potential of 3 point charges29. How to determine where the electric potential is zero between 2 point charges.
Potential Energy Potential EnergyPotential energy is which results from position or configuration. The SI unit for energy is the joule = newton x meter in accordance with the basic definition of energy as the capacity for doing. An object may have the capacity for doing as a result of its position in a gravitational field , an electric field , or a magnetic field.
It may have as a result of a stretched spring or other elastic deformation.R NavePotential Energy FunctionIf a force acting on an object is a function of position only, it is said to be a, and it can be represented by a potential energy function which for a one-dimensional case satisfies the conditionThe form of this relationship iswhich can be taken as a definition of. Note that there is an arbitrary in that definition, showing that any constant can be added to the potential energy. Practically, this means that you can set the zero of potential energy at any point which is convenient.R NavePotential Energy ConceptThe U is equal to the you must do to move an object from the U=0 reference point to the position r. The reference point at which you assign the value U=0 is arbitrary, so may be chosen for convenience, like choosing the origin of a coordinate system.The force on an object is the negative of the of the potential function U.
This means it is the negative of the slope of the potential energy curve. Plots of potential functions are valuable aids to visualizing the change of the force in a given region of space.R NaveNegative Signs in PotentialF in the definition of potential energy is the force exerted by the force field, e.g., gravity, spring force, etc.
The potential energy U is equal to the work you must do against that force to move an object from the U=0 reference point to the position r. The force you must exert to move it must be equal but oppositely directed, and that is the source of the negative sign.
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