Electricity Mr. Ford

Electric Charge Two types of electric charge (positive- Protons, Negative-Electrons) Two types of electric charge (positive- Protons, Negative-Electrons) Electrons move in solids. This movement is an imbalance of electrons in an object. Transfer of electrons between objects is static charge Electrons move in solids. This movement is an imbalance of electrons in an object. Transfer of electrons between objects is static charge Ions move in solutions. Ion is an element with a charge because it gained or lost electrons example Na+1 or Cl-1. Ions move in solutions. Ion is an element with a charge because it gained or lost electrons example Na+1 or Cl-1.

Electric Charge Continued All objects exert an electric force on each other. Can be attractive or repulsive like a magnet. All objects exert an electric force on each other. Can be attractive or repulsive like a magnet. Electric fields exist around every electric charge. Gets stronger the closer you get to the charge. Gets weaker the further away. Electric fields exist around every electric charge. Gets stronger the closer you get to the charge. Gets weaker the further away. Conductors contain electrons that can move more easily through the material Conductors contain electrons that can move more easily through the material Insulators are materials that eletrons cannot move easily from place to place. Insulators are materials that eletrons cannot move easily from place to place.

Electric Current Current is a flow of electric charge (Electrons through solids, and Ions through liquids) Current is a flow of electric charge (Electrons through solids, and Ions through liquids) Electric charge flows continuously through closed loop called a circuit. Electric charge flows continuously through closed loop called a circuit. A circuit has a source of electric charge-battery and an electric conductor-wire which is connected to the battery, and a receiver. A circuit has a source of electric charge-battery and an electric conductor-wire which is connected to the battery, and a receiver. Voltage is the measurement of now much electrical potential energy an electron can have. Ohm’s Law states Voltage = current X resistance or V=IR Voltage is the measurement of now much electrical potential energy an electron can have. Ohm’s Law states Voltage = current X resistance or V=IR

Electric Current Why do batteries die? Why do batteries die? Batteries (Teacher Explanation) Batteries (Teacher Explanation) Batteries supply energy to a circuit Resistance is the measure of how difficult it is for electrons to flow through a material. Resistance is the measure of how difficult it is for electrons to flow through a material.

Electric Circuits Two types of circuits-series and parallel. Two types of circuits-series and parallel. Series Circuit only has one path for electric current to flow. If the path is broken, current will stop flowing. Series Circuit only has one path for electric current to flow. If the path is broken, current will stop flowing. Parallel Circuits has more than one path for electric current to flow. If one path is broken, electrons continue to flow down other paths. Parallel Circuits has more than one path for electric current to flow. If one path is broken, electrons continue to flow down other paths.

Series

Parallel Circuit