10 ^ 19 electrons passed through the cross section of the conductor in 1 s. What is the charge q that has passed through
10 ^ 19 electrons passed through the cross section of the conductor in 1 s. What is the charge q that has passed through the cross-section of the conductor during this period of time? What is the current in the conductor?
Given:
t = 1 s;
e = 10 ^ 19 electrons.
Find: q and I.
Decision:
First, we find the charge q. To do this, write down the formula by which it is found.
q = n * e.
We know the value of e. It is equal to 1.6 * 10 ^ -19 C.
We substitute all the values in the formula and find the charge.
q = 10 ^ 19 * 1.6 * 10 ^ -19
Let’s finish the calculations to the end and get the charge value.
q = 1.6 Cl.
Next, we find the current in the conductor. Let’s also write down the formula. It looks like this:
I = q / t.
Let’s substitute the values of the variables into it and find the answer.
I = 1.6 / 1 = 1.6 A.
Answer: I = 1.6 A; q = 1.6 Cl.