A look at the parts and rotation of a DC motor.

A look at the forces acting on current carrying wires & charged particles in magnetic fields.

Magnetism, Earth’s magnetic field, Magnetic fields, Drawing the magnetic fields, Strength of magnetic fields, Magnetic fields around wires, The right-hand grip rule, The solenoid

Torque, Centre of mass, Equilibrium, Stability, Tension structures, Arches, Cantilevers, Ties

Forces, Stress, Strain, Stress / strain graphs, Young’s modulus, Strength, Strain energy and toughness

Semiconductors and doping, PN junctions, Reverse bias - no current, Forward bias, Diode IV curves, Uses of diodes, Calculations with diodes in series and parallel

Electric charge, Current, Potential difference, Resistance, Ohm’s law, Series circuits, Parallel circuits, Combination circuits - series + parallel, Power