Types of current

Question

Types of current

Accepted Answer

There are two types of current - AC and DC.

AC stands for Alternating Current and changes direction periodically.
DC stands for Direct Current and flows in one direction only.
AC is used for power transmission over long distances while DC is used for electronic devices.
Examples of AC sources include power grids and generators while batteries are a common source of DC.
AC voltage can be stepped up or down using transformers while DC voltage cannot be easily transformed.
AC is more dangerous to humans than DC due to its ability to cause muscle contractions.
DC is more efficient than AC for certain applications such as electric vehicles.

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