Mr. Murray's
IPC - Integrated Physics and Chemistry
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## Electricity and Electrostatics Links and Demos

Electricity

My Demo Videos:

Ohm's Law in a circuit

CAUTION: ADVANCED STUDENTS ONLY! Here are a lot of good circuit examples, but the notation is confusing. Unless you are willing to fight thru the notation, don't even try these.

AC Circuits

AC voltage and Coils, Capacitors, and Resistors

Lots of Demos at this site and this one.

Video - High Power Job - High Voltage Workers. Explains about voltage and Faraday's Cage (why you are safe in your car in a lightening storm)

Electrostatics -

My Demo Videos:

My Lectures (Not fancy. Sorry.)

Deriving the Electrostatic Equations (and the Electrostatic Equation Box) |
Calculating Electrostatics Quantities: Part 1: Net Electric Field |
Part 2: Net Voltage | Part 3: Net Force | Part 4: Net PE.

Other videos:

Electrostatic Videos from Jefferson Lab's Frostbite Theater - good stuff! and more than just electrostatics!

Electric Fields -

Electric Fields 1- Shows the field lines, and the field direction at any one point (the resultant). Be sure to drag the charge around. Obviously, for maximum learning: read the instructions.

Electric Field Game - This is AWESOME!!!! Move your mouse across the blank page and it will show you the direction of the electric field at that point. Try to figure out which type of charge or charges are making this field. HINT: the choices show only the number of charges. If there are two positive charges, for example, they could be anywhere.

Electric Fields 2 - Will show you the direction and strength of the field.

Van de Graaff Generator help here (teachers) - They are SOOOO helpful. If you need a Van de Graaff go to Winsco!

Capacitors -

Capacitor 1 - (included in the above overview) Instructions: there is a control slider just below the left corner of the picture. 1. Move the slider to the right and the battery pushes electrons to the negative side of the capacitor. 2. Move the slider back to the middle and the battery is disconnected, while the capacitor remains charged. 3. Move the slider to the left and the capacitor discharges back.

Capacitor 2 - You can change the plate separation, voltage, plate area, and even add a dielectric.

Capacitor 3 - Great Applet!!! When you click the red switch the battery starts charging the capacitor. You will see the electrons flowing. IMPORTANT: notice two things: 1. over time the number of electrons flowing decreases as the capacitor charge increases; 2. the voltage of the capacitor keeps increasing until it equals that of the battery. Click the red switch again and the capacitor discharges (loses its charge). Study this one!!!

Capacitor being charged and polarization of the dielectric - in French, but the graphics are good.