circuit diagram

We learned about different symbols. We use these symbols to differentiate from voltage to light bulbs because if we just have random circles on a circuit diagram you would get confused on which circle meant what. The light bulb symbol with a V in the middle is easy to recognize because Voltage starts with a V. Some thing hard to remember is the three different ways to draw a light bulb. Some one can get confused on the different ways or forget how to draw it.