A current of 5.0 A flows through an electrical device for 10 seconds. How many electrons flow through this device during this time? (e = 1.60 × 10^-19C) A) 0.20 B) 20 C) 2.0 D) 3.1 x $10^{20}$ E) 31 x $10^{20}$

Question

Quizplus · Accepted Answer

The charge passing through the device can be calculated using the formula:

Q = I x t

where Q is charge, I is current, and t is time.

Substituting the given values, we get:

Q = 5.0 A x 10 s = 50 C

Now, we know that charge is equal to the product of the number of electrons and the charge on each electron:

Q = ne

where n is the number of electrons and e is the charge on each electron.

Substituting the values of Q and e, we get:

50 C = n x 1.60 x 10^-19 C

Solving for n, we get:

n = 50 C / (1.60 x 10^-19 C) = 3.1 x 10^20

Therefore, the number of electrons that flow through the device is 3.1 x 10^20. The correct answer is D.

A Current of 5 102010^{20}1020 E) 31 X 102010^{20}1020

A Current of 5 $10^{20}$ E) 31 X $10^{20}$