Understanding Elétrico Corrente
O Flow of Electrons
Learn Sobre CorrenteElétrico current é o flow of electric charge—usually electrons moving through a conductor. Understanding current helps explain everything from como a flashlight works to por que transmission lines carry high voltage.
AC vs DC Corrente
Direct Corrente (DC)
- Electrons flow in one direction
- Batteries, solar panels, electronics
- Steady, constant flow
Alternating Corrente (AC)
- Electrons oscillate back e forth
- Wall outlets, power grid
- 60 Hz (US) ou 50 Hz (mais countries)
Comuns Corrente Values
| Aplicação | Corrente |
|---|---|
| LED indicator | 10-20 mA |
| Smartphone charging | 1-2 A |
| Laptop charging | 2-4 A |
| Household circuit | 15-20 A (breaker) |
| Elétrico stove element | 20-40 A |
| Elétrico vehicle charger | 30-50 A (Level 2) |
Ohm's Law
V = I × R
- Tensão = Corrente × Resistência
- Mais resistance → menos current (for mesmo voltage)
- Mais voltage → mais current (for mesmo resistance)
Conclusão
Elétrico current é o flow of charged particles, measured in amperes. AC current powers our homes e businesses, oscillating at 50-60 Hz. DC current é usado in batteries e electronics. Ohm's law relates current to voltage e resistance, forming o foundation of electrical engenharia.