Physics Demos

Electronics

Resistors
The top resistor (red-yellow-red) is
24 x 10^2 ohms or 2.4 kilohms.
The lower resistor (brown-red-violet) is
12 x 10^7 ohms or 120 megohms.
(I keep the color-code posted high in the front of the room.)

I also keep Ohm's Law, V=IR, and the three power formulas (VI=P, etc) hanging up in the front of the room.
(UCLA's powder blue and gold got washed out in the photo, darn!)
Also shown on the far right is a DC power supply the students make. Here it is used to power our class pencil sharpener at variable speeds!


	Just below the 9 is an electric generator which will light up a bulb. If you open the switch, it's easy to turn the crank but of course you get no light! If a brave student wants to feel how much voltage the bulb is getting, just put his/her hand parallel to the bulb's connections!

You can't read it, but the blue cup is an EV1 mug! One of Bay Watch's stars has one that I got to ride! No I didn't get her autograph!


	We work with oscilloscopes and signal generators and real breadboards (that tiny white thing below the oscilloscope!)