# IllustrationElectric current through a cross-sectional area

Level 2
Level 2 requires school mathematics. Suitable for pupils.

Share — copy and redistribute the material in any medium or format

Adapt — remix, transform, and build upon the material for any purpose, even commercially.

Sharing and adapting of the illustration is allowed with indication of the link to the illustration.

Positive charge $$q$$ from the box of positive particles moves towards the negatively charged particles because oppositely charged particles attract each other. The negative charges are trapped in a box, so they cannot move. Both boxes are connected with a conducting wire.

The movement of positively charged particles creates an electric current $$I$$. Electric current is the amount of charge that passes a cross-sectional area of the wire per time.