1. 1.
....
(Atoms) 3
2.
.......
3.
.........
3.1
........ 2
.........
Philosopher Thales)
..
(Sir William Gilbert)

2. 3.2
(Direct Current) 2
1) (Primary Cell)
......
...
.......
.
........
(Dry Cell)
Primary Cell)
2) Secondary Cell)
.
Storage Battery)
3.3
........
1)
.....

3. ....
Armature)
.... 1. 2. 3.

4. 2)
..... .
Commutature)
9
3.4
........
(Photo Cell)

5. 3.5 .....
2
...
3.6 ........
4.
......... 2
4.1
.............
4.2
2
1) (Direct Current)
Battery)

6. 2) (Alternating Current)
3
2
.................... (Single Phase)
................
1
1
.......... (Three Phase)
...................
3 120
...............
SinglePhase)
2 1 1