The electric field force was compared to the type of force seen by gravity or magnetism, a force at a distance. The field surrounds a charge and is a vector quantity. The magnitude can be measured by the effect it has on a test charge, along with the direction of the field. The effect of charge size on the field was shown and related to Coulomb's law, as well as the inverse square rule regarding the distance between charges and the force.

Review questions dealing with magnetic fields and electric currents... The effect of a magnetic field on a moving charge was demonstrated on video using a cathode ray tube, phosphorous screen, and magnetic field. The deflection was shown as occurring when the electron passed through the field at an angle, but not parallel. The deflection was always 90 degrees. The effect on a wire with a current was also depicted, along with the right hand rule to determine the direction of the field and the left hand rule to show the direction of movement. The Earth as a magnet was discussed in terms of the magnetic field protecting against radiation coming from space.

The concept of domains, are what causes a magnet to form. The formation of temporary magnets was shown and explained, as well as permanent magnets. The magnetic field produced by a current flowing through a wire was viewed as an image, showing it to be perpendicular to the flow of current. The right hand rule was examined as the method to determine the magnetic field direction. A straight wire made into a loop with the accompanying magnetic field produced, seen, and expanded into many loops, forming an electromagnet... The result of placing an iron bar in the center of the loop, and concentrating the magnetism was presented, along with the magnetism stopping when the current ceased.

The nature of the magnetic field was presented from the atomic view. The electron arrangement of atoms was reviewed from chemistry and the different spins of the electrons presented. It was shown that a moving charge produced a small magnetic field, while a current produced a larger magnetic field. A video showing the spins was viewed, along with the reasoning behind why most objects are not magnetic.

Refer to AM lesson outline

Discussion of magnetic force and magnetic field... The direction of the field lines, the strength of the field, the attraction and repulsion of the poles, the meaning of magnetic flux... The nature of the magnetic field in terms of magnetism being caused by a moving charge, an electron... The two types pf electron spin causing a magnetic field...

comparison of electric fields and magnetic field. Definition of electric field, diagram of electric field, measurement of magnitude and direction. Formula used to measure the force of the electric field around a particle.

Video demonstrating the effect of charge magnitude and distance on the electrical force between charges... Solving of an electrical force problem and comparing it to the force of gravity between the same two charged objects... The physics of conductors and insulators and their relationship to free electrons... Methods of charging an insulator by friction and by touch were investigated.

List strategies for solving combined series-parallel circuit problems... Using diagrams, solve a sample problem for equivalent resistance of resistors in parallel, substituting equivalent resistance into the circuit to produce only series resistance, then solving for current and voltage across resistors and in the whole circuit.

Review of the fundamental particles of the atom, and that only the electrons are mobile... comparison of the force of gravity with the electrical force...The way in which a substance is charged negative or positive, by mobile electrons... The rules of attractions and repulsion between objects, and the definition of static charge and the law of conservation of charge...The comparison of the gravitational law with Coulomb's law, and stating that the unit of charge is the Coulomb...