AC
What is AC current
a current that periodically reverses direction and changes its magnitude continuously with time
What is DC current
an electric current is one-directional flow of electric charge.
AC currents Examples
Battery-powered objects
Home electronics
Electrochemical cells
DC currents examples
Efficient long-distance transmission without significant power loss
Creating rotation in devices
pros
Travels well over large distances
Greater efficiency
pros
Direct current can be stored in batteries.
Lower voltage – safer
Frequency 0 (no oscillation)
cons
Higher voltage – not as safe
Magnitude varies with time
cons
Voltage of DC cannot travel very far as it begins to lose energy.
Less efficiency