Circuit diagram - Simple circuits

1. What does the larger line in the battery symbol represent?

• a. Negative terminal
  

• b. Positive terminal
  

• c. Electric current
  

• d. The switch

3. Which symbol represents the switch when it is turned on?

• a. A closed circle
  

• b. An open circle
  

• c. A straight line
  

• d. A zigzag line

2. What happens to the bulb if the filament is broken?

• a. It glows brightly
  

• b. It flickers
  

• c. It won't glow
  

• d. It glows dimly