What is AC vs DC electricity?
GeneralClass 12AllAnswered 27 Mar 2026
Answer
AC (Alternating Current):
- Current periodically reverses direction
- Voltage oscillates in a wave pattern
- Used for power grids and household supply
- Easily transformed to different voltages
- Freuency: 50-60 Hz typically
DC (Direct Current):
- Current flows in one constant direction
- Voltage remains steady
- Produced by batteries and solar panels
- Used in electronics and digital devices
- No freuency variation
The key difference is direction: AC alternates back and forth, while DC flows consistently one way. Most homes receive AC power, but virtually all electronic devices convert it to DC internally for operation.
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