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
To find the current in the wire, we first need to find the charge that passed through the wire.
Given:
Net passage of electrons = 4.3 x 10^18 electrons
Time taken = 0.14 s
We know 1 electron has a charge of -1.6 x 10^-19 Coulombs.
Charge passed = (4.3 x 10^18) x (-1.6 x 10^-19) C = - 6.88 x 10^-1 C
Now, we can use the formula for current:
Current (I) = Charge (Q) / Time (t)
I = -6.88 x 10^-1 C / 0.14 s
I = -4.914 x 10^-1 A
Therefore, the current in the wire is 4.914 x 10^-1 A (or 0.4914 A).