K7-04: RL CIRCUIT - FIELD COLLAPSE WITH FLUORESCENT BULB
- ID Code: K7-04
- Purpose: Demonstrate the magnitude of induced voltage
- Description: A 9-volt battery is connected across a large inductor; pushing the red button disconnects the inductor from the battery and immediately connects it across a fluorescent light tube. Collapse of the magnetic field in the inductor induces a voltage large enough to cause the fluorescent bulb to flash - well over 100 volts, or over ten times the voltage of the battery.
- Availability: Available
- References: http://lecdem.physics.umd.edu/images/refs/refsk.htm#K7-04
- Loc codes: K7
- Videos-1: http://lecdem.physics.umd.edu/images/videos/Demo_Vid/K7-04_RL%20CIRCUIT%20-%20FIELD%20COLLAPSE%20WITH%20FLUORESCENT%20BULB%20A.mp4