Tuesday, May 18, 2010


This first image is calles a series cricuit. There is one current going throughout  the whole enitre circuit. The voltage remains the same in the whole series circuit. The volatge is the same because there are no resistors.

The second image is called a parallel circuit. In this circuit, the voltage is the same between the two light bulbs. The current is also the same in the circuit. The current (I) is equal to the voltage (V) divided by the risistance (R). Since the voltage and resitance of both light bulbs are the same that means that the current is also the same.

The last image is a complex circuit. In this complex circuit, there is a parallel circuit, and a series circuit. The voltage (V) is not the same in this circuit. The light bulb, that is in series, is brighter than the other two light bulbs that are in the parallel circuit. This is because it has more voltage (V). The two light bulbs ,in the parallel circuit, equal each other in voltage. The current in the parallel circuit is not the same as the current in the series circuit because it has more resistors (light bulbs).

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.