filmov
tv
In the circuit shown in the figure, the potential difference between points `a and b` is `V_(a)
![preview_player](https://i.ytimg.com/vi/fPvtyqIhgpI/maxresdefault.jpg)
Показать описание
In the circuit shown in the figure, the potential difference between points `a and b` is `V_(a) -V_(b) = 4 V`. Find the emf, `E` of the battery.