|Apr21-08, 03:56 PM||#1|
Circuts and Light Bulbs
1. The problem statement, all variables and given/known data
Two Light bulbs, one rated 30W at 120V and another rated 40W at 120V are arranged in two different circuits.
a) they bulbs are connected in parallel to a 120V source
determine the resistance and current in both bulbs.
b) determine the resistance and current if they are connected in series
2. Relevant equations
3. The attempt at a solution
I took the power over the voltage to find the current and then plugged that in to V=IR, but how does the voltage and current differ when it splits, or when it is in series?
|Apr21-08, 04:02 PM||#2|
The load voltages for a parallel configuration is the same across each load. Each light in the parallel configuration has the same voltage.
For a series configuration the load voltages add to equal the source voltage.
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