The podcast is a very quick review of the meaning of capacitance, the factors that affect the capacitance of a parallel-plate capacitor, and rules for capacitors in series and parallel.
Thursday, April 21, 2011
This podcast is a very quick review of curved mirrors, including how to draw ray diagrams, what types of images are formed by different curved mirror situations, and how to perform calculations related to curved mirror image formation.
Wednesday, April 20, 2011
This podcast is a quick review of what electric potential means, and also how potential is related to electric field strength. A very brief discussion is also included that reviews how to calculate potential due to a collection of point charges.
Tuesday, April 19, 2011
This podcast is a very quick review of Faraday's law of induction, discussing the meaning and calculation of magnetic flux, and the various ways in which a change in flux can happen to lead to induced emf. An added 2 minutes at the end of this podcast reviews how calculations are different in a calculus-based application of Faraday's law.
This podcast is a very quick review of how to perform several different calculations related to magnetic field. (It does NOT review directional aspects of magnetic forces, such as the right-hand rule.) Long straight current-carrying wires are discussed, from the perspective of B-fields they create and how they are affected by external B-fields. The effects of a B-field on a moving charge's motion are also reviewed.
This podcast is a very quick review of the differences between series and parallel circuits in terms of the way current flows, and in terms of the equivalent resistance of the circuit.
Monday, April 18, 2011
This podcast is a very quick review of the meanings of and relationships between basic electrical quantities (current, voltage, resistance, and power), and also a very quick review of the factors about a wire that affect its resistance.
Friday, April 15, 2011
This podcast is a very quick review of the effects of electric field, and also of how to calculate electric field due to multiple point charges.
Wednesday, April 13, 2011
Friday, April 1, 2011
This podcast introduces Ampere's Law, a powerful formula allowing the calculation of magnetic fields due to currents for certain symmetric situations. Comparisons are made to Gauss' Law in an attempt to remind students of the power of symmetry when calculating fields, and example problems are also included.