Current is generally transported from the source to our houses using AC current
As there are easy to step-up and step-down the voltage using Transformers
They are also more efficient when transporting current over large distances
HVDC (High Voltage DC) transmissions are typically used between countries
Most of the electrical circuits used in electronic devices use DC current
DC is easier to control and allows for more compact circuits
Some devices like washing machines use both AC and DC current
AC current can be converted to DC current using a Rectifier
DC current can be converted to AC current using Inverter
DC current is always at its Peak Voltage and flows in one direction
Invertor can be used to convert Solar Power/ Car Battery into AC current to be used by household appliances
They are also used on motors/ devices that rotate (Fans, Compressor)