Idea 7of 9Builds onNothing is used upPush, flow, fight
One loop
Two bulbs in a row. What do they share?
Today you'll discover
- what one loop forces on both bulbs
- how the battery's volts get divided
- the name for parts in a row
Think firstTwo equal bulbs in one loop on 12 V
Two equal bulbs in one loop on 12 V. What does each bulb get?
Decide first, then press Next. Follow the single path through both bulbs.
A loop of wire with a battery and two bulbs along the top. After a prediction, arrowheads of the same size appear on every wire, then the volts across each bulb are printed, half the battery's each. The last step asks what happens to one bulb when the other burns out.
See the whole ideathe big idea and the key word, in one place
The big idea
Series: one loop, one current, the volts shared out.
Easy to get wrongOld string lights were wired in series: one dead bulb and the whole string went dark, because there is only one loop.
Key word
- series
- components in one loop, one after another: the same current through each, voltages adding to the supply
About this modelCharge is never used up: what leaves the battery comes back. Volts are what get spent.
Charge is never used up: what leaves the battery comes back. Volts are what get spent.
Ready to use it?
- Give the current through and the voltage across each bulb in a described series loop.