Answer Key: Circuits and Switches_Unit Level

Submitted by Randy Steele on 10 July, 2011 - 15:58

Answer Key:

  1. Power source – a battery (many possible answers) Conducting path – a wire (many possible answers) Switch – a light switch (many possible answers) Load  –   light bulb (many possible answers)
  2. A high voltage power line: - conducting path A solar panel on a roof: – power source The lights in this room: - load The thermostat in this room: - switch The speakers on a boom-box: - load A USB cable: - conducting path
  3. Insulator – plastic on the wires (many possible answers) Conductor – metal inside wires (many possible answers) Semiconductor – transisotr, diode, LED lights (many possible answers)