Direct current
principle · 1800 · Industrial Revolution
A current flowing in one direction.
Principles and materials it uses
- Electrochemical reaction — uses. The first source of direct current was galvanic.
Where it is used
- Voltaic pile — is used in. It produces direct current.
- High-voltage direct current — is used in. Transmission by direct current.
- Ammeter — is used in. In a school circuit the ammeter shows the direct current from the battery.
- Inverter — is used in. An inverter turns a battery's direct current into alternating current.