alternating current

Back-and-forth power

Alternating current is electrical current that periodically reverses direction, in contrast to direct current, which flows one way.

The standard in most power grids, it can be efficiently transformed to different voltages for transmission and use: The house runs on alternating current.

Often abbreviated AC.

power

generator

Electricity-producing machine

distribution · power lines · substation · utility · wall outlet · load balancing · blackout · brownout · three-phase · single-phase

components

transformer

Voltage-altering electrical device

rectifier · circuit breaker · relay · switchgear · fuse · choke · ballast · voltage regulator · step-up · step-down

physics

electromagnetism

Force linking charge and magnetism

  • sinusoidalWave-patterned, mathematically regular
  • waveformGraphed oscillation pattern
  • phaseDistinct period in sequence

impedance · reactance · capacitance · inductance · resonance · magnetic field · Faraday · electromagnetic induction · RMS · hysteresis

waveform

hertz

Frequency measurement unit

amplitude · cycle · harmonics · periodicity · cycles per second · phase shift · crest · trough · ripple · distortion

Tesla

Nikola Tesla

Tesla coil · power transmission · Ferraris

Categories
Opposites
electrical current flow direction

alternating currentdirect current

Unidirectional electrical flow

DC · static electricity

Family

current, alternative, alternate, currently, alternating, currents, alternatives, alternately, alternatively

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Used worldwide · Timeless · Rated G