#### Question

# Calculate the number of electrons passing a point in the wire in 10 minutes..?

..When the current is 5A. It says e=1.6x10 to the power of -19 coulombs.

Could you show the equation or whatever you need to work it out.

#### Answers

One coloumb is 6.24 times ten to the eighteenth power amount of electrons in one second at one amp. Muliply that times five and then multiply that result times 600. That sure is a lot of electrons.

#1

Do your own homework.

#2

This comes down to how we define current.

A current of 1 ampere is said to flow when 1 coulomb of charge passes a given point in 1 sec.

Charge = Current * time

So, change the minutes to seconds and we have...

Charge = 5 * 10 * 60 = 3000 Coulombs

So the number of electrons must be..

3000 / (1.6 * 10^-19) = 1875 * 10^19 = 1.875 * 10^22 electrons.

#3