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Circuits and Voltage

Circuits and Voltage. What is a circuit?. Circuit – A path that is a complete loop for electricity to take Found anywhere there is electricity Once broken -> Electricity cannot pass!. Circuits in action. Inside our walls. Plugs. Electronic Devices. Voltage.

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Circuits and Voltage

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  1. Circuits and Voltage

  2. What is a circuit? • Circuit – A path that is a complete loop for electricity to takeFound anywhere there is electricity • Once broken -> Electricity cannot pass!

  3. Circuits in action • Inside our walls • Plugs • Electronic Devices

  4. Voltage • Voltage – Difference in potential energy between 2 places in a circuit • Measured in Volts (Symbol = V) • Causes a current in a circuit

  5. DO NOW : Answer the following • What are the three transfers of charge? Can you give an example of each? (static electricity notes) • Mr. W stands on the bookshelf and leans over the ledge. He has a high ________ ________. As he falls he loses this and gains a high ______ _____.

  6. DO NOW: Answer the following • Based on the following Data Table • When deionized water is tested, it shows no conductivity. Why would it become a strong conductor when mixed with Sodium Chloride? • What ingredients in Gatorade make it a good conductor?

  7. ANSWER THE FOLLOWING • How is a rollercoaster similar to Voltage?

  8. Voltage • How does a rollercoaster work? • Voltage = exact same

  9. Where does Voltage come from? Voltage Source – two terminals, both different • positive and negative All circuit require source of energy • Batteries • Power plants

  10. Unparalleled Power? • Current not always unobstructed • What slows a rollercoaster? • Brakes? Gravity? Weight? • All of these are forms of resistance!

  11. Join the Resistance! • Resistance – Measure of how difficult it is for charges to flow through a material • Measured in Ohms • 4 Factors of Resistance 1. Material • What is wire made of? • Insulator or Conductor? 2. Length • Long vs. Short • Longer = more resistance (more bumps on the way)

  12. Join the Resistance! 3. Diameter • Thinner wire = more resistance • Larger wire = less resistance 4. Temperature • Electronics don’t like heat! • Colder = less resistance

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