Magnetism: skeleton notes: algebra based.Covers Magnetic fields, magnetic forces on straight wires and moving charges, induced EMF and induced current. Contains questions that are designed to encourage thinking and thus understanding, rather than memory. Permanent magnets and their fields, earths polesField around a long straight current-carrying wireField around a current-carrying solenoid or coilMagnetic fluxMagnitude of a magnetic fieldDirection of a magnetic fieldmagnitude of the magnetic fo