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A current of 1.50 A flows in a wire. How many electrons are flowing past any point in the wire...

Question:

A current of {eq}1.50 \ A {/eq} flows in a wire. How many electrons are flowing past any point in the wire per second?

Electric Current:

In an electric conductor, only the net flow of electrons through a cross section establishes the electric current. The amount of electric current depends on the number of electrons flowing through a cross section per second.

Answer and Explanation:

Given Data

  • Electric current in the wire, {eq}I\ = 1.50\ A{/eq}

Finding the number of electrons (n) flowing through a given point in time t = 1 sec

The magnitude of charge of electron is {eq}e\ = 1.6\times 10^{-19}\ C{/eq}

The electric current is given by the expression:

  • {eq}I\ = \dfrac{n\times e}{t} {/eq}
  • {eq}1.50\ A\ = \dfrac{n\times 1.6\times 10^{-19}\ C}{1\ s} {/eq}
  • {eq}n\ = 9.375\times 10^{18}{/eq} electrons

Learn more about this topic:

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Electric Current Lesson for Kids

from Science for Kids

Chapter 6 / Lesson 28
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