D.1
Gravitational fields
Kepler’s laws, inverse-square gravity, field strength, potential, orbits, escape speed
D.2
Electric and magnetic fields
Charge, Coulomb’s law, electric field lines, magnetic field patterns, electric potential, equipotentials
D.3
Motion in electromagnetic fields
Electric deflection, Magnetic circular motion, Velocity selectors, Motor effect, Parallel-wire forces
D.4
InductionHL
Magnetic flux, Faraday’s law, motional emf, Lenz’s law, ac generators
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