Series Circuits

1
Series Circuits

• Lesson 8

2
Series Circuits

• Some circuits provide a single pathway for
  electric current. A circuit that provides only
  one pathway for electric current is called a
  series circuit.
• In a series circuit, the loads and sources are
  connected in a single loop.

3

• Look at the diagram to the right. If you open the
  switch, how many bulbs will turn off?
• They will all turn off

4

• Use the correct symbols to draw a diagram of a
  series circuit that has three batteries, two
  bulbs, and one switch
• What will happen if one bulb burns out?
• The circuit will be open and all of the lights
  will go out.

5

• Remember that current only flows in a closed
  circuit. If you open a series circuit at any
  point, the flow of current stops everywhere in
  the circuit.

6
Lab Adding loads in a series circuit

• Many flashlights, toys and tools are designed
  with series circuits. What happens when you add
  loads to a series circuit?