Timeline for Why are electrons not pushed out from the conductor at an open circuit under the influence of a power source?
Current License: CC BY-SA 3.0
5 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Sep 24, 2014 at 18:50 | comment | added | Ignacio Vazquez-Abrams | @user3131972: There is no "outside world" per se, there is only "something else". In this case the "something else" is the insulator called "air". | |
| Sep 24, 2014 at 14:17 | comment | added | Martin Petrei | @user3131972 Think about it: how electrons move from one type of conductor, to another type, e.g from copper to aluminium? They can move because the energy level of electrons in copper match the aluminium (aprox). From conductor to insulator, the energy levels are so much different, then for the electrons go into the insulator, we must provide a very much energy. | |
| Sep 24, 2014 at 14:09 | comment | added | user3131972 | Thank you. Great answer. Nevertheless, it did not help me. I understand why there is no current in dielectrics. According to my idea of the electric current electrons must be pushed to the outside world of the conductor. But they abut against the end of the wire as in barrier. What keeps the electrons inside the material when the electromotive force acts on the conductor? | |
| Sep 24, 2014 at 11:59 | history | edited | Martin Petrei | CC BY-SA 3.0 |
added 126 characters in body
|
| Sep 24, 2014 at 11:11 | history | answered | Martin Petrei | CC BY-SA 3.0 |