Electric Potential AP Physics Chapter 17 Electric Charge
- Slides: 27
Electric Potential AP Physics Chapter 17
Electric Charge and Electric Field 17. 1 Electric Potential Energy and Potential Difference
Electric Potential Energy & Potential Difference Electricity can be viewed in terms of energy The electrostatic force is conservative because it depends on displacement Now We can calculate this value for a uniform electric field 17. 1
Electric Potential Energy & Potential Difference Positive test charge – increases when moved against the field Negative test charge – increases when moved with the field Electric Potential (Potential) – electric potential energy per unit charge 17. 1
Electric Potential Energy & Potential Difference Only difference in potential are meaningful Potential Difference (Electric Potential Difference) – is measureable Measured in volts (after Alessandro Volta) 17. 1
Electric Potential Energy & Potential Difference If we want a specific potential value at a point, we must pick a zero point. That point is usually either A. The ground B. At an infinite distance 17. 1
Electric Charge and Electric Field 17. 2 Relation between Electric Potential and Electric Field
Relation between Electric Potential & Electric Field Work It also is So pew 17. 2
Electric Charge and Electric Field 17. 3 Equipotential Lines
Equipotential Lines Equipotential Line or Equipotential Surface – one at which all points are at the same potential 17. 3
Equipotential Lines Must be perpendicular to the electric field Constant Field 17. 3
Equipotential Lines Must be perpendicular to the electric field Point Charge 17. 3
Equipotential Lines Must be perpendicular to the electric field Dipole 17. 3
Electric Charge and Electric Field 17. 4 The Electron Volt, a Unit of Energy
The Electron Volt A unit of energy – for electrons, atoms, or molecules Electron Volt (e. V) 17. 4
Electric Charge and Electric Field 17. 5 Electric Potential Due to Point Charge
Electric Potential Due to Point Charge Using calculus it can be shown that the electric potential a distance r from a single point charge q is Assuming that potential is zero at infinity 17. 5
Electric Charge and Electric Field 17. 7 Capacitance
Capacitance Capacitor – device that stores electric charge In RAM, Camera Flash, 17. 7
Capacitance Simple capacitors consist of two plate The symbol for a capacitor is The symbol for a cell is The symbol for a battery is 17. 7
Capacitance When a potential difference is placed across a capacitor it becomes charged Charging a Capacitor This process takes a short amount of time Time for RC Circuit The charge on each plate is the same, but opposite charge The amount of charge is proportional to the potential difference A constant C (Capacitance) gives 17. 7
Capacitance – Unit Farad For a parallel plate capacitor, the capacitance depends on the area of the plates, the distance between the plates 17. 7
Electric Charge and Electric Field 17. 8 Dielectrics
Dielectrics Most capacitors have an insulator between the plates Called a Dielectric Increases the capacitance by a factor K Called the dielectric constant 17. 8
Dielectrics Some Dielectric Constants Material K Paper 3. 7 Glass 5 Rubber 6. 7 Mica 7 Strontium Titanate 300 17. 8
Electric Charge and Electric Field 17. 9 Storage of Electric Energy
Storage of Electric Energy A charged capacitor stores energy 17. 9
- Electric potential
- Chapter 21 electric charge and electric field
- Chapter 21 electric charge and electric field
- Coulombs constant units
- Chapter 21 electric charge and electric field
- Difference between charge and electric charge
- Electrons flowing
- Electrical potential energy
- Equipotential lines
- Electric potential energy
- Electric potential and potential difference
- Electric potential due to dipole
- Peelectric
- Potential energy formula
- Ap physics c electric potential
- Electric field from electric potential
- Chapter 6 electricity section 1 electric charge answers
- Chapter 17 section 1 electric charge and force answer key
- Chapter 33 electric fields and potential
- Chapter 23 electric potential
- Electrostatic potential
- Chapter 35 electric circuits
- Conceptual physics chapter 23 electric current
- Electric potential units
- Osmotic potential vs water potential
- Water potential equation
- Calculating solute potential
- Graded potential vs action potential