What is direct and alternating current?State it's difference.
Answers
The difference between AC and DC mainly includes the following
Alternating Current (AC)
Alternating current is defined as the flow of charge that changes direction periodically. The result obtained will be, the voltage level also reverses along with the current. Basically AC is used to deliver power to industries, houses, office buildings, etc.
AC is produced by using called an alternator. It is designed to produce alternating current.Inside of a magnetic field, a loop of wire is spun, from which induced current will flow along the wire. Here the rotation of the wire may come from any no of means i.e. from, a steam turbine, flowing water, a wind turbine and so on. This is because the wire spins and enters into different magnetic polarity periodically, the current and voltage alternates in the wire.
Generation of AC
From this, the generated current can be of many waveforms like sine, square and triangle. But in most of the cases sine wave is preferred because it is easy to generate and calculations can be done with ease. However the rest of the wave requires an additional device to covert them into respective waveforms or the shape of the equipment has to be changed and the calculations will be too difficult.
DC Source
In a DC circuit, electrons emerge from the minus or negative pole and move towards the plus or positive pole. Some of the physicists define DC as, it travels from plus to minus.
DC Source
Generally the basic source of direct current is produced by batteries, electrochemical, and photovoltaic cells. But AC is most preferred across the world. In this scenario AC can be converted to DC. This will happen in multiple steps. Initially, power supply consists of a transformer, which later converted into DC with the help of a rectifier. It prevents the flow of current from reversing and a filter is used to eliminate current pulsations in the output of the rectifier. The is the phenomenon how AC is converted into DC