Which experiments provided evidence to determine the nature of the electron?
How can the properties of fields be understood using both an algebraic approach and a visual representation?
What are the consequences of interactions between electric and magnetic fields?
How are electric and magnetic fields like gravitational fields?
What are the relative strengths of the four fundamental forces?
How can moving charges in magnetic fields help probe the fundamental nature of matter?
Charge is quantized. Which other physical quantities are quantized? (NOS)
the direction of forces between the two types of electric charge
Coulomb’s law for charged bodies treated as point charges
the conservation of electric charge
Millikan’s experiment as evidence for quantization of electric charge
that the electric charge can be transferred between bodies using friction, electrostatic induction and by contact, including the role of grounding (earthing)
the electric field strength as given by E = F/q
electric field lines
the relationship between field line density and field strength
the uniform electric field strength between parallel plates as given by E = V/d
magnetic field lines
the electric potential energy Ep in terms of work done to assemble the system from infinite separation
the electric potential energy for a system of two charged bodies
that the electric potential is a scalar quantity with zero defined at infinity
that the electric potential Ve at a point is the work done per unit charge to bring a test charge from infinity to that point as given by Ve = kQ/r
the electric field strength E as the electric potential gradient as given by E = – ΔVe/Δr
the work done in moving a charge q in an electric field as given by W = qΔVe
equipotential surfaces for electric fields
the relationship between equipotential surfaces and electric field lines
