Difference between AC and DC
Answers
AC or Alternating Current:
In AC current the flow of current is not steady and it changes periodically. In the first half the current is positive and electrons flows in forward direction. But in the second half the current is negative and the electrons flow into backward direction. Hence net charge flow is zero in case of AC current. AC current is measured by RMS value.
Irms = Ip/√2
where Ip is the peak value of current.
AC current is used widely almost everywhere because it's generation and transportation is cheap.
DC or Direct Current:
In DC the flow of current is steady and the electrons flow in a single direction(forward or backward) and does not change over the period of time. DC current has zero frequency.
DC is mainly used in batteries because it's production and transportation is costly.
definition of ac and dc respectively
