Electricity

• Electricity is the flow of electric charges on a conductor. It is a basic part of nature and one of the most widely used forms of energy.
• Electric energy is caused by the moving electric charges called electrons. The faster the charges move, the more electrical energy they carry.
• A positive charge carries less electrons.
• A negative charge carries more electrons.
• • Neutrons - Neutral Charge
  • Protons - Positive Charge
  • Electrons - Negative Charge
• Current - Rate at which the charge is flowing the amount of electric current depends on the amount of electrons passing through a point in a given time.
• Ohms Law - Current passing through a conductor is directly proportional to the voltage and inversely proportional to the resistance.
• Resistance - The tendency of a material to resist the flow of charge.
• The SI Unit for Current is A/Ampere
• The SI Unit for Resistance is Ω/Ohm
• The SI Unit for Voltage is V/Volt
• Voltage = Current x Resistance
• Current = Voltage ÷ Resistance
• Resistance = Voltage ÷ Current
• Current can also be written as "I"
• Voltage or Potential Difference - The difference in energy of the charges between two points. Voltage does not depend on the number of charges but on the comparison of energy carried by the electrons at different points.