AC/DC
Physics: Edexcel IGCSE, topic 2.1.4
Electric Current - Direct and Alternating
There are two types of electric current.
Direct current (d.c)
- The electric current flows in only one direction.
- Batteries and cells are sources of direct current.
Alternating current (a.c)
- The electric current repeatedly changes direction.
- In the UK, the electricity from the plug sockets is a source of alternating current.
- This mains electricity supply has a frequency of 50 Hz and is about 230 V.
Test yourself on AC/DC
Batteries and cells are sources of...
Which of these statements are features of direct current?