Question

Asked Jan 28, 2019

if during a period of 5 seconds, 10^17 electrons travel to the right past a given point in a copper wire, what is the current in the wire in amperes and in which direction is the current flowing.

Step 1

Given: number of electrons(n) = 10^{17}

time(t) = 5 seconds

Find: Current(I)

^{ }

Step 2

use the formula:

I = Q/t

where, I = current in ampere

Q = charge in coulomb

t = time in seconds

"current is measured by charge flowing per second".

Step 3

we also know that, Total charge (Q) = n×q

where, n = number of electrons

...

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