Back EMF
From UO Physics Demonstration Catalog
Revision as of 13:48, 20 April 2022 by Physdemo (talk | contribs) (Created page with "{{NewDemo|subject=Electricity and Magnetism|topic=Inductance|file1=Backemf.gif}} 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 power supply. '''Location: ''' * Coil from transformer: Shelf J-3 * 6/12 Volt Po...")
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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 power supply.
Location:
- Coil from transformer: Shelf J-3
- 6/12 Volt Power Supply: Shelf K-3
- Oscilloscope: Black Cabinet
