Saved Bookmarks
| 1. |
Electrons are caused to fall through a potential difference of 1500 volts. If they were initially at rest. Then calculate their final speed. |
|
Answer» Solution :The electrical potential ENERGY is converted into KINETIC energy. If v is the final speed then `(1)/(2) mv^(2) =`eV ` v = sqrt((2eV)/(m)) = sqrt((2xx 1.6 xx 10^(-19)xx 1500)/(9.1xx 10^(-31))) = 2.3 xx 10^(7) ms^(-1)` |
|