Alternatin current

In alternatin current (AC, also ac), the flowe o electric chairge periodically reverses direction. In direct current (DC, an aa dc), the flowe o electric charge is anly in ane direction. The abbreviations AC an DC are eften uised tae mean simply alternatin an direct, as when thay modify current or voltage.^{[1] [2]}

References

1. N. N. Bhargava and D. C. Kulshreshtha (1983). Basic Electronics & Linear Circuits. Tata McGraw-Hill Education. p. 90. ISBN 978-0-07-451965-3.
2. National Electric Light Association (1915). Electrical meterman's handbook. Trow Press. p. 81.