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Electricity - Coggle Diagram
Electricity
Electric current
The continuous flow of electrons through a material. It flows when there's a charge imbalance between two points.
Conductors (metals) allow current to flow; insulators (plastic, wood, air) block it.
Allow current to flow, uses metals like gold, silver, coper etc..
Blocks current flow, made of plastics, wood, ceramics and air
Effects on electric current
Heat (Joule Effect): electrons collide with atoms, generating heat. Light: produced by heat or gas reactions. Motion: based on magnetic attraction/repulsion.
Electric quantities
Voltage (V) – measured in Volts. Current (I) – measured in Amps. Resistance (R) –
conection of the elments in an electrical circuit
Connects two elements of an electrical circuit
Series: same current, voltages add up, resistances add up.
Parallel: same voltage, currents add up, total resistance decreases
Representation and symbols
Standard symbols represent components: battery, alternator, switch, push button, motor, lightbulb, LED, resistor, and bell.
Receptors
Control
Generartors
Enviormental impact of elctricity use
Non-renewable sources (fossil fuels, nuclear) cause global warming, radioactive waste, and acid rain.
Renewable sources (wind, solar, hydro) are far less harmful. Simple habits like turning off lights reduce consumption significantly.
Electric circuits
A closed path through which current flows, requiring three elements:.
receptors (convert electricity into heat, light, motion, or sound)
control/protection elements (switches, fuses).
generators (batteries, alternators, solar cells)
ohms law
V = I × R — the proportional relationship between voltage, current, and resistance.
Electric Charge
Atoms have protons (+), neutrons (neutral), and electrons (−). Matter is normally neutral because charges cancel out.
When electrons transfer between objects, an imbalance creates charged matter. Same charges repel, opposite charges attract.
