Topic — Interactions between electric charges at rest.
Featured in chapters
13·14
Linked atoms
55 linked atoms.
13 Coulomb’s force and electrostatics
- Coulomb and Newton: two twins with an asymmetry
- From the torsion balance to Franklin’s lightning
- Bubble diagram with electrostatic energy
- Two conservation laws together
- Electrostatic potential energy
- Electrostatic equilibrium
- Worked exercise — Charge on a spring, equilibrium and expansion
- Worked exercise — Charged particle as a projectile near a charged plane
- Worked exercise — Three charges at the vertices of a triangle
- The centre of mass ignores internal forces
- Electric charge
- Contact forces are electromagnetic
- Coulomb’s law
- Superposition principle
- Problem — Charge of a sphere given the force
- Problem — Collision between charges with friction
- Problem — Conductor in an external field
- Problem — Given F find q
- Problem — Two charges in circular motion
- Problem — Two charges thrown upwards
- Problem — Two charges released from rest
- Problem — Two equal charges and a test charge
- Problem — Equilibrium of three charges on the axis
- Problem — Equilibrium on a line
- Problem — Science-fiction physics: all charges positive
- Problem — Science-fiction physics: constant k doubled
- Problem — Coulomb force in the hydrogen atom
- Problem — Resultant force on three charges
- Problem — Force between charges +2 and -3 microcoulombs
- Problem — Force between two 1-microcoulomb charges
- Problem — Force between two charged balls
- Problem — Force between two spheres with the same charge
- Problem — Fraction of electrons to transfer
- Problem — Faraday cage
- Problem — Water jet deflected by a rod
- Problem — The two gunslingers
- Problem — The comb and the paper
- Problem — Electrostatic induction on a metal sphere
- Problem — Induction on a small metal sphere
- Problem — Lightning rod
- Problem — Quantisation of charge
- Problem — Ranking Coulomb forces (pairs A-D)
- Problem — Ranking Coulomb forces (identical pairs)
- Problem — Ranking three pairs of charges
- Problem — Ratio between gravitational and Coulomb force
- Problem — Challenge: equilibrium of three aligned charges
- Problem — Fermi estimate: force between two electrons
- Problem — True or false about charges and conductors
14 Electric field and potential
- What is the electric field?
- Counting the lines: the field from the density
- Two ways to calculate the field
- Field lines: the five rules
- Resistors in a polyhedron
- Equipotential surfaces