Physics

• Electricity

  it is the flow/movement of electrons between atoms.
• Electric Charge

  Physical Property of an object that causes it to be attracted towards or repelled from another charged object.
• Electric charge

  is located in the atom.
• Electricity

  comes from the Greek word "elektron" which means amber.
• Static electricity

  is produced when there is an imbalance of electrical charges.
• Amber is able to produce static electricity when rubbed with cloth.
• Benjamin franklin

  classified charges either positive or negative
• JJ Thomson

  discovered electrons
• Ernest Rutherford

  discovered protons
• Charges are measured in Coulombs (C)
• Atoms are made up of three subatomic particles namely:

  • electrons
  • protons
  • neutrons.
• Net charge

  it is the sum of the number of electrons and protons.
• Conductor

  Materials that allow the movement of electric charges to move easily.
• Insulator

  Materials that do not allow the movement of electric charges move easily.
• Charging by Induction

  is to charge an object without actually touching the object to any other charged object.
• Charging by Conduction

  is to charge an object touching the object to any other charged object.
• Charging by Friction

  Electrons are transferred when objects are rubbed against one another.
• Law of Conservation of Charge

  It states that the algebraic sum of all the electric charges in any closed system is constant.
• Closed system

  no charge is being added or removed from the system.
• The magnitude of the electric force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them.
• CHARLES-AUGUSTIN DE COULOMB

  Creator of coulomb's law.
• COULOMB’S LAW

  When dealing with charged objects, we also talk of forces between them. These forces can either be attracted or repulsive.
• Electric field

  is said to exist in the region or space around a charged object, the source charge.
• Electric field is the force per unit charge N/C
• the direction of the fields is defined by the force on a positive charge.
• Electric Flux

  refers to the rate of the flow of the electric field, as determined by the number of electric fields or flux through a given.
• Electric Flux

  is the rate of the flow or electric field through a given surface.
• The net electric flux going outward the surface of the region is directionally proportional to the magnitude of the net charge enclosed by that region.
• Gauss's Law

  states that the total electric flux through any closed surface is proportional to the total net charge inside the surface.
• Karl Friedrich Gauss

  invented Gauss's Law
• Electrostatic Attraction

  when negatively charged atom is attracted towards positively charged atom and vice-versa.
• THERE IS WORK BETWEEN CHARGES
• ELECTRIC POTENTIAL ENERGY

  It is the energy that is needed to move an electric charge against an electric field.
• ELECTRIC POTENTIAL ENERGY

  It is the amount of work needed to move and electric charge from its reference point to specific point on electric field.
• CAPACITORS

  device that stores or holds a electric charge
• CAPACITANCE

  is the capacity to hold the electric charges
• SERIES CIRCUIT

  all components are connected end-to-end, forming a single path for current flow.
• PARALLEL CIRCUIT

  all components are connected across each other, forming exactly two sets of electrically common points.
• EQUIVALENT CAPACITOR

  is a capacitor that contains the same amount of capacitance as the combination of capacitors in a given system.
• TYPES OF CAPACITORS

  Electrolytic

  Ceramic

  Silver mica

  Tantalum