PIRA 5F20.50 - Parallel and Series Light Bulbs

• Use the three-way switch to alternate between the series circuit and the parallel circuit.

• Series circuit has a knife switch to short out the last two bulbs in series.

• The two directions are labeled for your convenience.
  

• Demonstrates the difference in bulb brightness between both circuits.

• The parallel circuit should be brighter and the series dimmer.

• Use the two blocks to prop up both panels at a slight angle.

• Ensure that both circuits work properly.

• If the staff requests, provide additional bulbs with different resistances.

Photo Shows the Demonstration Used by the University of Texas at Austin.

Last Updated 2023 - University of Texas at Austin Physics Dept. - All Rights Reserved.