ELECTRICITY
Electrical energy
The electricity is a form of energy tht lets negativily charged particles
We can classify these tiny particles in: Protons,neutrons and electrons
The electricity current is the flow of the electron from one atom to another inside a conductive material
Is made up of small particles called atoms
Electrical energy is the most common form of energy,it can be transformed into many form (light, heat,sound)
Conductors and insulators
Conductors: materials that let electric current flow through them
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Insulators: materials that do not let electric current flow through them
Electric circuits
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DEFINITION: Is a series of intercomertial components that an electric current flows thouht to produce an effect
Control devices
Conductors
Power sources
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Load devices
Motor: Converts electrical energy to kinetic energy
Lamp: Converts electrical energy to light energy
Buzzer: Converts electrical energy to sound energy
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Resistor: Converts electrical energy to heat energy.
Push swich: Open and close the circuit while the button is pushed.
One- way swich: One position opens the circuit and stops electric current from flowing through it,and the other close the circuit and lets electric current pass.
Two way swich: Have two positions,when we press them they change to the other position.
Are those objects that transport the electrical energy (wire)
Are complements that suply the necesary electrical energy to the rest of the curcuit
Cell : Supplies electrical energy to the rest of the circuit. They have a +and a - terminal.
Battery: A grouped set of cells
Representing circuits
We represent electrical circuits with a very simple drawing called an elctrical shemanthic.
Every component has a standised symbol
Open circuits and closed circuits/ Shorts circuits
A circuit is open when the energy of the power source cannot reach the loads devices and the electric current cnnot flow.
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A cirvcuit is closed when the energy of the power source reach the loads devices, so the electric current flows.
Short circuits: occurs whenthe electir current is transported by the wires without passing through a load device.