Wednesday, May 19, 2010

Light Rocks! (explanations)

Image 1: This is an image of of a series circuit. There is one, equal current running through the whole circuit. The voltage remains the same throughout the whole series circuit. This is because there are no resistors, and in a series circuit, the voltage always remain the same.

Image 2: This is an image of a complex circuit. In this circuit, I have a parallel circuit, and a series circuit. The voltage is different in this circuit. The 1 light bulb in the series circuit is brighter than the 2 light bulbs in the parallel circuit because it has more voltage. The two light bulbs in the parallel circuit have the same voltage. The current in the parallel circuit is different to the current in the series circuit because it has more resistors.

Image 3: This image is of a parallel circuit. In this circuit, the voltage is the same between the two light bulbs. The current is the same in the parallel circuit. The current is equal to the voltage divided by the risistance. Since the voltage and resitance of both light bulbs are the same, the current is the same.

1 comment:

  1. Your diagrams are very good and I wished you had cropped the circuit more neatly.
    The characteristics of a DC circuit are missing.
    You have several inaccurate statements in your posting:
    1. You said that voltage is the same because there are no resistors. In class we discussed that not only the light bulbs have resistances but also the batteries.
    2. The voltage in a parallel circuit is not "the same between" rather it is the same ACROSS each parallel branch.
    The assignment asked for clear explanations of how current and voltage work in various types of circuits.
    Please be sure that you understand how the circuits work as it is an important part of the final exam.