Bob F Posted February 21, 2009 Report Share Posted February 21, 2009 If you adjust the variable resistor from minimum resistance to maximum resistance, what happens to the two lamps. They both get dimmer. They both get brighter. One gets dimmer as the other gets brighter. Nothing changes. Quote Link to comment Share on other sites More sharing options...
Bob F Posted February 21, 2009 Author Report Share Posted February 21, 2009 Here's the circuit. Quote Link to comment Share on other sites More sharing options...
Bob F Posted February 23, 2009 Author Report Share Posted February 23, 2009 Yes, good, you were all correct. As the resistance increases the current decreases, so the current into each branch with the lamps will decrease, thus making the lamps dimmer. Quote Link to comment Share on other sites More sharing options...
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