Topic — Description of the electric interaction through field and potential.
Present in chapters
14·13
Linked atoms
93 linked atoms.
13 Coulomb’s force and electrostatics
- Problem — Field at the centre of an equilateral triangle
- Problem — Electric field at 30 cm
- Problem — Electric field of a 5-nanocoulomb charge
- Problem — Parallel-plate capacitor
- Problem — Given E, find r
- Problem — Given V, find q
- Problem — Electric dipole
- Problem — Two charges on a rod
- Problem — Graph reading: field of a dipole
- Problem — Graph reading: V(r) of a point charge
- Problem — Electric pendulum
- Problem — Potential of a negative charge
- Problem — Ranking of electric fields
- Problem — Fermi estimate: capacitance of the Earth
- Problem — True or false on charge and field
14 Electric field and potential
- Plates moved apart with the battery disconnected
- Field inside a conductor
- Field of three charges in a row
- Field of a charged cube
- Field of an infinite wire
- Field of a spherical shell
- Field of an infinite plane
- Field of a point charge at 9 cm
- Field of a uniformly charged sphere
- Field on the axis of a ring
- Capacitance of a cylindrical capacitor
- Capacitance and charge of a capacitor
- Equivalent capacitance of three capacitors
- Charging a capacitor
- What is the electric field?
- Cylindrical and spherical capacitor
- Parallel-plate capacitor
- Parallel-plate capacitor — capacitance, charge and energy
- Conductors in electrostatic equilibrium
- Counting the lines: the field from the density
- From field to spherical radius
- From the graph to the sign of the charges
- From potential to field: the gradient
- From potential to charge
- From stored energy to voltage
- Definition of potential
- Electric energy density
- Energy density in a thunderstorm
- Dielectrics and polarisation
- Dielectric in a capacitor
- Potential difference and work
- Cloud-to-ground potential difference
- Dipole and test charge
- Dipole in a uniform field
- Draw the equipotentials
- Drill: distance for a given field
- Drill: work in moving a charge
- Drill: potential at the midpoint
- Two charged capacitors connected together
- Two connected conducting spheres
- Two ways to calculate the field
- Field energy in the capacitor
- Energy of a capacitor
- Energy and dielectric: battery connected or disconnected
- Energy and power of a defibrillator
- Equipotentials and field lines are perpendicular
- Worked exercise — electric dipole on the axis
- What-if physics — electrostatics in 2D
- What-if physics — protons with double mass
- What-if physics: Coulomb 1 over r cubed
- Flux through an external charge
- Flux and Gauss’s lemma
- Gauss for closed surfaces
- Is the field a thing or a calculation?
- The electric dipole
- The shock in the car and the Faraday cage
- Work to separate two charges
- Field lines do not cross
- Reading the field lines
- Field lines: the five rules
- Why invent the field?
- Potential of two charges at the midpoint
- Potential of a 10 nC charge
- Potential of a point charge at 1 m
- Which graph of E
- Ranking of the field for various configurations
- Ranking of capacitors with different geometries
- Ranking of energy among capacitors
- Ranking of potentials
- Electrostatic shielding in a car
- Shield and charge in a hollow conductor
- Sign of the charge from the field lines
- Fermi estimate — energy of a cloud
- Fermi estimate — electrostatic shock
- Equipotential surfaces
- Circulation theorem
- Dimensional check of the energy density
- True or false on field and potential