Question Video: Comparing the Direction of Conventional Current to the Direction of Electron Flow | Nagwa Question Video: Comparing the Direction of Conventional Current to the Direction of Electron Flow | Nagwa

# Question Video: Comparing the Direction of Conventional Current to the Direction of Electron Flow Science • Third Year of Preparatory School

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The picture shows the electrons and atomic nuclei in a section of copper wire. The blue circles represent electrons and the red circles represent atomic nuclei. There is an electric current in the wire, and the electrons in it are moving to the right. What is the direction of conventional current in the wire?

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### Video Transcript

The picture below shows the electrons and atomic nuclei in a section of copper wire. The blue circles represent electrons and the red circles represent atomic nuclei. There is an electric current in the wire, and the electrons in it are moving to the right. What is the direction of conventional current in the wire?

Here, we’ve been given a diagram that shows electrons and atomic nuclei in a section of copper wire. There is current present in the wire, and we’ve been told that electrons are flowing to the right. It’s our job to identify the direction of the conventional current in the wire.

Now, current is the flow of electrons. But it’s important to remember that conventional current was defined under the assumption that current is the flow of positive charge carriers. In reality, only the electrons move along the wire. And we know electrons are negatively charged. These are the only true charge carriers in the wire.

It’s important to note that even though the atomic nuclei in the copper wire are positively charged, they don’t move along the wire. So they are not charge carriers. There are no positive charge carriers in the wire, but we can still identify the direction that they would flow if they did exist in the wire.

Let’s recall that electrons flow in the opposite direction of conventional current. This is because electrons have the opposite charge of the fictitious positive charge carriers. Here, we know that electrons are flowing to the right. So the direction of conventional current must be the opposite, to the left.

Therefore, we know the correct answer to our question. The direction of the conventional current in the wire is to the left.

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