理解する Electric Current

Electric current is the flow of electric charge—usually electrons moving through a conductor. 理解する current helps explain everything from how a flashlight works to why transmission lines carry high voltage.

AC vs DC Current

Direct Current (DC)

• Electrons flow in one direction
• Batteries, solar panels, electronics
• Steady, constant flow

Alternating Current (AC)

• Electrons oscillate back and forth
• Wall outlets, power grid
• 60 Hz (US) or 50 Hz (most countries)

Common Current Values

Ohm's Law

V = I × R

• Voltage = Current × Resistance
• More resistance → less current (for same voltage)
• More voltage → more current (for same resistance)

まとめ

Electric current is the flow of charged particles, measured in amperes. AC current powers our homes and businesses, oscillating at 50-60 Hz. DC current is used in batteries and electronics. Ohm's law relates current to voltage and resistance, forming the foundation of electrical engineering.

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• Amps, ボルト, and ワット: 理解する Electrical Units
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