Answer Key: EV3 - Circuit Unit Level

  1. Example: EV3 with a touch sensor (many possible answers):
    Power Source - EV3 battery
    Conducting Path - EV3 wires

    Switch - Touch Sensor or EV3 brick buttons
    Load - EV3 LCD screen or speaker, motor, etc.
  2. Insulator – plastic on the wires, brick, motors (many possible answers)
    Conductor – metal inside wires, usb cable (many possible answers)
    Semiconductor – brick LCD screen, battery LED lights (many possible answers)