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Electrical Unit Review: Ions, Electricity Basics, and Circuit Components

Explore the fundamentals of electrical units, ions, static and current electricity, circuit components, Ohm's Law, energy, and power equations with clear explanations and examples. Enhance your understanding and excel in electrical studies!

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Electrical Unit Review: Ions, Electricity Basics, and Circuit Components

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  1. Electrical Unit Review

  2. Ions • An atom that has gained an electron (more negative) is called a negative ion • An atom that has lost an electron (more positive) is called a positive ion • Electrons are the only part of the atom that moves

  3. Electricity • Study of Electricity is called electrostatics • Electricity is the movement of electrons from one object to another

  4. Two Types of Electricity • Static electricity – electrons do not move freely, usually stays in one spot • Current electricity – electrons do move freely, this is found in a circuit

  5. Static Electricity • Insulators – electrons do not move easily (the charge will stay where it was created) • Conductors – electrons can move freely over the object

  6. Static Electricity • Electrostatic series table (will be given) – the object on the top is always positive the object on the bottom is always negative

  7. Static Electricity • Three ways of charging an object: • Charge by friction (rubbing) • Charge by contact (just by touching) • Charge by induction (when the object is brought close but does not touch)

  8. Static Electricity • Two major ways of discharging an object: • By Grounding • By discharging at a point

  9. Current Electricity • Parts of a circuit: Know how to draw them and what they do. 1) Electrical Load - Converts energy 2) Electrical Source - Provides energy (electricity flows from the negative to the positive) 3) Electrical Switch - turns on and off the circuit 4) Wire - pathway

  10. Current Electricity • What is Ohms Law V= IxR

  11. Current Electricity

  12. Current Electricity • What is Electrical Energy, What is its unit, what is the equation to find it • Electrical energy is the movement of energy from the electron to the load • Joule • E = V x I x t (sec)

  13. Current Electricity • What is Power, its unit, what is the equation 1) Power is the rate at which an object uses energy 2) Watts 3) P = V x I

  14. Current Electricity • You need 5 things per question to get 5 points: 1) LIST 2) FORMULA (the one you will use) 3) SHOW WORK/CORRECT ANSWER 4) UNITS EVERYWHERE 5) SENTENCE

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