Rock, Paper, Switches

A timber and black exhibit table with a red, brown, white and blue exhibit sitting on the table top. The exhibit has a sloping blue face with arrow buttons on it, and a vertical information panel at the back.
A timber and black exhibit table with a red, brown, white and blue exhibit sitting on the table top. The exhibit has a sloping blue face with arrow buttons on it, and a vertical information panel at the back.

An electric field can only be present within a closed circuit.

How it works

Two people press switches to complete an electric circuit and illuminate a rock, paper or scissors icon as part of this traditional game.

Things to try or ask around the exhibit

  • Can you play Rock, Paper, Scissors with a friend using electric circuits?
  • Can you choose a different symbol and form new electric circuits?

Background

An electric field can only be formed and maintained within a closed electric circuit or loop. If the loop is broken, the electric field cannot be maintained.

Finding the science in your world

By turning a switch on or off, an electric circuit can be closed or opened to turn an appliance on or off.