Hi electronic experts,
My daughter is doing high school physics and in an electronics test got a question about relative brightess of light bulbs in series.
She answered that all bulbs are of equal brightness, which I reckon is correct. Her answer was marked wrong. We have questioned the teacher, who responed "In series circuit the current that goes through each light bulb is the same. However, since light bulbs are resistors, as electrons pass through each light bulb some energy is lost to light (and heat) and as such, bulb 5 will be the brightest and bulb 1 the dimmest."
I thought than in a series circuit, current was the same all the way and all resistors evenly divided the voltage. This would mean all bulbs recieved the same current and voltage, therefore have the same brightness. Am I correct?
If anyone has links, I would really appreciate it.