heating effect of electric current class 12

55:56

3:18

2:24

3:25

کوتاه

4:54

9:42

2:18

کوتاه

7:05

2:49

33:36

3:58

8:24

8:24

52:49

25:15

7:38

10:00

10:02

5:24

11:56

19:15

8:01

33:20

28:57

22:40

1:36

1:36

10:07

3:20

3:20

5:17

7:49

8:10

5:51

2:57

3:44

5:30

4:45