An electric device delivers a current of 5.0 A to a device.How many electrons flow through this device in 10 s? (e = 1.60 × 10^-19C) A) 0.20 B) 20 C) 2.0 D) 3.1 × 10²⁰

Question

Quizplus · Accepted Answer

To find the number of electrons, we can use the formula:
Charge = Current x Time x Charge of 1 electron
Charge of 1 electron (e) = 1.60 × 10^-19 C

Charge = 5.0 A x 10 s x 1.60 × 10^-19 C/electron
Charge = 8.0 × 10^-18 C

Now, we know that the charge on 1 electron is 1.60 × 10^-19 C. 
So, the number of electrons can be found by dividing the total charge by the charge on 1 electron:
Number of electrons = Total charge / Charge on 1 electron
Number of electrons = 8.0 × 10^-18 C / 1.60 × 10^-19 C/electron
Number of electrons = 50

Therefore, the number of electrons that flow through the device in 10 s is 50, which is closest to option D: 3.1 × 10^20.

An Electric Device Delivers a Current of 5