Question

10 to the power of 20 electrons,each having a charge of 1.6 *10 to the power -19C pass from a point A towards another point B in 0.1s what is the current in ampere?

Answer 1

First of all you need to understand what current is.

Current is the rate of flow of charges.
I = q /t = net charge flow/time

net charge = number of electrons × charge of one electron
net charge, q = 10^20 ×1.6× 10^-19
q = 16 Coulomb

I = q/t = 16/0.1 = 160 A

Hence, a current of 160A flows from point B to point A.
Note that the direction of current is opposite to the direction of flow of electrons. Since electrons move from A to B, the current is from B to A.

I hope you understand the concept.
All the best.

Answer 2

Answer:

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