Here's why:

* Current is the movement of electric charge. This charge can be carried by both positive and negative charges.

* Protons are positively charged particles located in the nucleus of an atom. They are not typically the charge carriers in everyday electrical circuits.

* Electrons are negatively charged particles that orbit the nucleus of an atom. In most materials, electrons are the primary charge carriers responsible for electric current.

Think of it this way: Imagine a pipe filled with marbles. If you push more marbles into the pipe, the marbles move along the pipe. The marbles represent the electrons, and the movement of marbles represents the electric current.