What happens to the brightness, voltage and current of the bulbs as more bulbs are added in parallel? Why?
2007-12-10 11:20:08 · 3 answers · asked by sunita s 1 in Science & Mathematics ➔ Physics
Anyting added in parrelel will share the same voltage. On the other hand, the more light bulbs you ad, the lower the current will be going through each bulb...even though they have the same volage difference accross its terminals. The brightness of the bulbs will decrease becasue it is the current throught the filament of the bulb that heats it up. If the current decrease the brightness will decrease.
2007-12-12 01:51:44 · answer #1 · answered by Brian 6 · 0⤊ 0⤋
It relies upon on the indoors Resistance of the source. The circuit made up by way of the bulbs in parallel is under the flexibility distinction U between the ends of the source that's a lowering functionality of the present I provided by way of the source. So increasing the style of bulbs you advance the present lowering U. the effect is that the brightness of each and every bulb decreases based on the magnitude of the indoors resistence of the source. understanding that the brightness of a bulb is proportional to I^2 you could evaluate precisely that shrink. enable n be the style of the bulbs, R the resistence of a single bulb, E the electromotive stress of the source and r its inner resistence. in accordance with Kirchhoffs' regulation we've E=rI+IR/n the place from I=E/(r+R/n) and you could locate that increasing n I decreases.
2016-12-17 13:55:01 · answer #2 · answered by ? 4 · 0⤊ 0⤋
extremely tough situation. search with google and yahoo. just that could actually help!
2015-04-05 19:37:58 · answer #3 · answered by ? 2 · 0⤊ 0⤋