Back EMF
From UO Physics Demonstration Catalog
Return to Inductance
Description:
A current is run through a coil, which in turn is hooked up to an oscilloscope. A 330 ohm resistor is placed between the positive and negative terminals of the coil. With the oscilloscope in storage mode, a sharp negative peak can be seen to coincide with a spark when one of the banana plugs is pulled from the transformer.
Location:
- Coil from transformer: Shelf J-3
- 6/12 Volt Power Supply: Shelf K-3
- Oscilloscope: Black Cabinet
