- #1
Capt.Obvious
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Hi guys.
I need some help with an assignment. I have a circuit as depicted below with a 220V AC power source and 3 100W lamps. I’m asked to calculate the power in each lamp when switch 4 is closed and when switch 5 is closed. I’m also asked whether the lamps are brighter or dimmer.
I’m thinking that lamp 1 will always burn at same brightness, since it’s parallel to the other lamps. However I am confused whether lamp 2 will work when switch 5 is closed. My first reaction is no, but I’ve managed to confuse myself enough to not know anymore.
So pls help.
[PLAIN]http://www.upload.ee/image/1083803/lamps.png
I need some help with an assignment. I have a circuit as depicted below with a 220V AC power source and 3 100W lamps. I’m asked to calculate the power in each lamp when switch 4 is closed and when switch 5 is closed. I’m also asked whether the lamps are brighter or dimmer.
I’m thinking that lamp 1 will always burn at same brightness, since it’s parallel to the other lamps. However I am confused whether lamp 2 will work when switch 5 is closed. My first reaction is no, but I’ve managed to confuse myself enough to not know anymore.
So pls help.
[PLAIN]http://www.upload.ee/image/1083803/lamps.png
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