PHYSICS MYSTERIES

Revised version not complete.

Physics Mystery #1 DC CIRCUITS (5F20.55) Put a light bulb in series with 2 bulbs in parallel. Predict what you think will happen. Try to explain what actually happens. Use to talk about series and parallel circuits and temperature effect on resistance.

Add  FTIR, yello/green led, carbon? rod, soup cans, red/blue toilet bowl cleaner, transparent tape.

A NEW PHYSICS MYSTERY A circuit consisting of two resistors (different values) and two pieces of wire is placed around a coil like the one used for jumping ring. A voltmeter is connected to the midpoint of the two wires and placed on the left. A second voltmeter is also connected to the midpoint of the wires and placed on the right. The coil is connected to an ac power source. The two meters will show very different voltages. This raises questions about the concept of potential/potential energy in an electrical circuit. It also raises a practical problem if you are measuring voltage where induced EMFs are present. This circuit can also be used as a simulation of quantum superposition. It acts like it is two circuits at once. It could also be used as example of symmetry breaking or parity non-conservation.