CHAPTER 1

1.1 (a) State Coulomb's law, F = Qq/4πε₀r² = kQq/r²

1.1 (b) Sketch the force diagram

1.1 (c) Apply Coulomb's law for a system of point charges

1.2 (a) Define and use electric field strength, E = F/q₀

1.2 (b) Use E = kQ/r² for point charge

1.2 (c) Sketch the electric field strength diagram

1.2 (d) Determine electric field strength, E for a system of charges

1.3 (a) Define electric potential, V

1.3 (b) Define and explain equipotential lines and surfaces of an isolated charge in a uniform electric field

1.3 (c) Use V = kQ/r for a point charge and a system of charges (Maximum four charges in 2D)

1.3 (d) Calculate potential difference between two points: ΔV = V final - V initial, ΔV = W/q₀

1.3 (e) Deduce the charge in potential energy, ΔU between two points in electric field ΔU = q₀ΔV

1.3 (f) Calculate the potential energy of a system of point charges U = k(q₁q₂/r₁₂ + q₁q₃/r₁₃ + q₂q₃/r₂₃) up to maximum three charges

1.4 (a) Explain quantitatively the motion of a charge in a uniform electric field with the aid of a diagram