Image Credit

Description:

This drawing shows an open switch with one end connected to the negative terminal of D-cell battery. The positive terminal of the battery is connected to a flashlight bulb the other side of the bulb is connected to the other end of the switch. The three components will form a closed loop when the switch is closed.

Source:

Energy Quest

License:

None needed

Source URL:

http://www.energyquest.ca.gov/story/images/chap04_simple_circuit_light_2007.gif