Difference between revisions of "Series Circuit with Light Bulbs"
From UO Physics Demonstration Catalog
(Created page with "{{NewDemo|subject=Electricity and Magnetism|topic=Resistance, EMF, and Current|file1=}} Two light bulbs are hooked in series. A third light bulb is connected directly to a variac (120v). The two series bulbs are half as bright and when the variac is adjusted to the brightness of the series bulbs it is at 50%. When a 75w bulb and a 25w bulb are connected in series only the 25w bulb lights up because it has a higher resistance and therefore most of the available voltage i...") |
Holdenjose (talk | contribs) (added video) |
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{{NewDemo|subject=Electricity and Magnetism|topic=Resistance, EMF, and Current|file1=}} | {{NewDemo|subject=Electricity and Magnetism|topic=Resistance, EMF, and Current|file1=}} | ||
Two light bulbs are hooked in series. A third light bulb is connected directly to a variac (120v). The two series bulbs are half as bright and when the variac is adjusted to the brightness of the series bulbs it is at 50%. When a 75w bulb and a 25w bulb are connected in series only the 25w bulb lights up | Two light bulbs are hooked in series. A third light bulb is connected directly to a variac (120v). The two series bulbs are half as bright and when the variac is adjusted to the brightness of the series bulbs it is at 50%. When a 75w bulb and a 25w bulb are connected in series only the 25w bulb lights up. Series circuit the current is the same in both, so which bulb has a higher resistance will have the higher voltage dropped across it. so the25W bulb lights. | ||
'''Location: | '''Location: | ||
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* Light Bulbs: Drawer 11 | * Light Bulbs: Drawer 11 | ||
* Sockets: Shelf K-2 | * Sockets: Shelf K-2 | ||
* Variac: Shelf K-4 | *Variac: Shelf K-4[[File:Series Circuit Bulbs.mp4|thumb]] | ||
* | * | ||
Latest revision as of 16:19, 25 January 2023
Return to Resistance, EMF, and Current
Description:
Two light bulbs are hooked in series. A third light bulb is connected directly to a variac (120v). The two series bulbs are half as bright and when the variac is adjusted to the brightness of the series bulbs it is at 50%. When a 75w bulb and a 25w bulb are connected in series only the 25w bulb lights up. Series circuit the current is the same in both, so which bulb has a higher resistance will have the higher voltage dropped across it. so the25W bulb lights.
Location:
- Light Bulbs: Drawer 11
- Sockets: Shelf K-2
- Variac: Shelf K-4
