All the exercises of the chapter, worked through step by step, in the order they appear in the book: first the worked example in the text, then the end-of-chapter problems (numerical, conceptual, ranking, graphical, dimensional, Fermi estimates) and finally the supplementary exercises (drill, inverse, synthesis, challenges and speculative physics).
Worked example in the text
End-of-chapter problems
- Potential of a point charge at 1 m
- Field of a point charge at 9 cm
- Sign of the charge from the field lines
- Flux through an external charge
- Potential of two charges at the midpoint
- Parallel-plate capacitor: capacitance, charge, energy
- Energy density in a thunderstorm
- Dimensional check of the energy density
- Energy and power of a defibrillator
- Shielding and charge in a hollow conductor
- Ranking potentials
- From the graph to the sign of the charges
- Reading the field lines
- Dipole and test charge
- Draw the equipotentials
- Which graph of E(r)
- Field energy in the capacitor
- Resistors on a polyhedron
- Potential of a 10 nC charge
- Potential difference and work
- Capacitance and charge of a capacitor
- The shock in a car and the Faraday cage
- Ranking energy among capacitors
- True or false about field and potential
- Energy of a capacitor
- Cloud-to-ground potential difference
- Plates pulled apart with the battery disconnected
Supplementary exercises
- Drill: distance for a given field
- Drill: potential at the midpoint
- Drill: work in moving a charge
- Field lines never cross
- Equipotentials and field lines are perpendicular
- Ranking the field for various configurations
- Field of three charges in a line
- From the field to the spherical radius
- From the potential to the charge
- r³
- Speculative physics: electrostatics in 2D
- Worked example — Electric dipole on the axis
- Equivalent capacitance of three capacitors
- Electrostatic shielding in a car
- Dielectric in a capacitor
- Field on the axis of a ring
- Fermi estimate: electrostatic shock
- Fermi estimate: energy of a cloud
- Field of a charged cube
- Work to separate two charges
- Field inside a conductor
- Ranking capacitors with different geometries
- From stored energy to voltage
- Two charged capacitors connected together
- Dipole in a uniform field
- Speculative physics: protons with double mass
- Charging a capacitor
- Capacitance of a cylindrical capacitor