There is a net passage of 4.3 * 1018 electrons by a point in a wire conductor in 0.14 s. What is the current in the wire?
A
The current in the wire can be calculated using the formula:
I = Q / t
Where:
I = current
Q = charge (in coulombs)
t = time (in seconds)
Given that there is a net passage of 4.3 * 10^18 electrons, we need to find the total charge that passed through the point in the wire. Each electron has a charge of 1.6 * 10^-19 C, so:
Q = (4.3 * 10^18) * (1.6 * 10^-19)
Q = 6.88 * 10^-1 C
Now, we can calculate the current:
I = 6.88 * 10^-1 / 0.14
I = 4.914285714285714 * 10^-1
I = 0.491 A
Therefore, the current in the wire is 0.491 A.