Here's why:

* Electric Fields and Charge: Electric fields exert forces on charged particles. The direction of the force depends on the sign of the charge:

* Positive charges: Experience a force in the same direction as the electric field.

* Negative charges: Experience a force in the opposite direction of the electric field.

* Neutral Particles: Neutral particles, which have no net charge, are not affected by electric fields. They will pass through an electric field without being deflected.

Examples:

* Electrons: Negatively charged particles, would be deflected in the opposite direction of an electric field.

* Protons: Positively charged particles, would be deflected in the same direction as an electric field.

Let me know if you'd like more details on how electric fields interact with charges!