. Using the Standard components in the upper left of the Gizmo, try to get a light bulb to light up. You can drag as many bulbs, wires, batteries, switches and fuses as you like onto the circuit board. A circuit is a path containing easily moveable charges. When the light bulb lights up, negatively-charged particles called electrons are flowing through the wire and bulb. This flow is called current. 2. Now try to light the bulb with the smallest number of components. Make a sketch of your simple circuit in this space: 3. Based on what you have seen, what must be true for a circuit to light a bulb?