Lecture Demonstrations Laboratory

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PHYS 241E/1: General Physics II

• lemon battery

  sawed-in-half D cell

  innards of 9-volt battery

  cross-section of 6 volt auto battery

  hand-held generators (blue plastic one and black metal one)

  60 Hertz wall voltage on oscilloscope

  show polarization of wall outlet by measuring with voltmeter on Elmo

• measure resistance of a cool and hot light bulb, prefer to do this directly rather than deducing from V and I

  Simple circuit with battery in series with a resistor and multimeter to measure V,I,R on Elmo

  blow a fuse

  circuit board for show and tell with lots of R's and C's etc.

•  video  - Temperature Effects on the Resistance of Copper Wire
• Ohm's Law

• light bulb board for series and parallel circuits