Problem 22.2


2 *10 ^13 electrons flow through a transistor in 1.0 ms.

Part A -

What is the current through the transistor?

Express your answer using two significant figures.

To find the current through the transistor, we can use the formula:

Current = Charge / Time

We are given that 2 * 10^13 electrons flow through the transistor in 1.0 ms.

First, let's convert the time to seconds:
1.0 ms = 1.0 * 10^-3 seconds

Now, let's calculate the charge:
Since each electron has a charge of 1.6 * 10^-19 Coulombs, we can find the total charge by multiplying the number of electrons by the charge of each electron:

Charge = (2 * 10^13) * (1.6 * 10^-19)
Charge = 3.2 * 10^-6 Coulombs

Finally, we can calculate the current by dividing the charge by the time:
Current = (3.2 * 10^-6) / (1.0 * 10^-3)
Current = 3.2 * 10^-6 / 10^-3
Current = 3.2 * 10^-3 Amperes

Since we need to express our answer using two significant figures, the final answer is:
Current = 3.2 * 10^-3 A