Saved Bookmarks
| 1. |
The charge on an electron is 1.6×10^-19 C .Find the number of electrons that will flow per second to constitute a current of 2A. |
|
Answer» ONG>Explanation: Current is the amount of charge passing through a conductor in a particular interval of time. So according to the definition, the formula for the current is: I = Q/t I = 2 A and t = 1 sec Therefore, Q = I*t Q = 2*1 = 2 C One electon consists of a charge of 1.6*10^-19 C. Then the number of electrons passing would be: Q = N*e n = Q/e n = 2/(1.6*10^-19) = 1.25*10^19 electrons |
|