Question

differentiate between ac and dc

Answer 1

AC : it is used to produce alternating current.

in the ac generator the flow of current in the circuit reverses the direction after every half rotation of the coil.

DC: it is used produce direct current.

in the dc generators , the direction of current is same as long as the coil rotates in the magnetic field.

Answer 2

Answer:

DC- Direct current

AC- Alternating current

AC is a kind of current which alternates it direction after 'every very strict defined time period'.

The words between two quotation marks are very important.

DC current and AC current can interchange between one another using converters.

AC current is very widely used in many cases.

Nikola Tesla transformed the world of electricity.

So, DC always maintains its direction. But AC switches between + and - regularly.