MAPPING YOUR MIND Electric current Same charges repel Opposite charges attract Electrostatic force Electric motors Negative ions Transformers Generators Electrons Applications Gain Parallel Positive ions Electrons Categories Electrons Renewable Open Neutrons Closed Energy in objects at rest Switch Atoms Source Matter Circuits Conductivity Forms of energy Energy sources Current Conducting materials High number of free electrons Insulating materials Low number of free electrons Superconducting materials No resistance When electrons move, they create an electric field Kinetic Components Electricity The electric field creates a magnetic field Energy in motion Load Basics Electromagnetism Potential Wire/cable Composed of Strength of magnetic field depends on amount of current Can be Types Contain 2.1 The basics of electricity Non-renewable Short Lose Protons Direction of current depends on direction of movement of magnet Series Electricity and magnetism Batteries Pushed by Potential difference = voltage Flows in wires Opposes resistance Measured in amp res Types Direct Alternating Comes from energy Generators Components Process Anode Uses Cathode Electromagnetic induction Electrolyte Magnetic field interferes with electrons Process Anode reacts with electrolyte Releases electrons Cathode catches electrons Electric current is induced Produces Electricity Types Primary Non-rechargeable Secondary Rechargeable Components Armature Poles of magnet around coil Shaft Types Alternator Dynamo