heating effect of electric current class 10

3:18

2:24

کوتاه

55:56

3:25

9:42

2:18

10:02

7:05

2:49

8:24

52:49

کوتاه

5:51

4:36

12:46

2:39

کوتاه

4:42

5:23

4:36

33:36

3:58

8:24

2:57

5:03

4:40

4:36

1:52

25:15

7:38

10:00

4:54

5:24

10:12

1:03:57

9:55

7:49

5:30

7:30