Electricity and Circuits

What is electricity?

• The storage of energy in a battery.

• The flow of electrical energy from one place to another.

• The movement of air that generates power.

• 
  The heat generated by friction.

Why is a closed circuit needed for electricity to power our electronics?

• It allows electricity to be stored for later use.

• 
  It prevents electrical shocks.

• It provides a complete path for electricity to flow.

• It stops the circuit from overheating.

What is an advantage of a series circuit?

• Each device has its own separate path to the power source.

• All devices turn on and off at the same time.

• If one device stops working, the others will still function.

• It requires multiple power sources to operate.

What is an advantage of a parallel circuit?

• If one device stops working, the others remain on.

• It uses only one wire to connect all devices.

• It only works with high-voltage batteries.

• It does not require a closed circuit.

How can you control the brightness of a light bulb or the spin of a motor in a circuit?

• Use a higher or lower voltage battery.
  
  

• Add or remove resistors.
  

• Use a potentiometer to adjust electricity flow.

• All of these.

Why are circuit boards useful in electronic devices?

• They integrate all components into a compact design.

• They make it easier to switch out components.

• They have contributed to major advancements in electronics.

• All of them.

Which of the following is NOT a component typically found on a circuit board?

• Resistors

• Transistors
  

• LED lights
  

• Magnets

Which career involves designing circuits for things like robots, video games, and electric cars?

• Mechanical engineer
  

• Electrical engineer

• Civil engineer

• Chemical engineer