What happened as the John Travoltage moved his finger farther away from the door knob?

John Travoltage is stimulation in which students across the world explore and learn about the concepts of static electricity including repulsion, grounding, and transfer of charge.

When John Travolta moved his finger farther away from the door knob, he got an electric shock.

Explanation:

The overall John Travolta simulation shows the concept of creating an electric or static current when two bodies are rubbed against one another.

However, if it comes in contact with a third body that has an opposite or no charge at all, the static charge will be neutralized.

He let go of the doorknob.