Draw a circuit diagram for the electromagnet that you will use in your crane. Indicate the direction of the conventional flow on the circuit diagram.

• Battery: Four 1.5 Volt cells in series form a 6V battery. The symbol is a series of alternating long and short parallel lines, with the long line representing the positive terminal. $$\text{---||||---}$$
• Switch: An open switch symbol. $$\text{---/ ---}$$
• 6.5 Volt MES lamp (indicator light): A circle with a cross inside. $$\text{---(X)---}$$
• Electromagnet: As shown in Fig 2, this is a coil with lines above it representing the core. $$\text{---}\sim\sim\sim\text{---}$$

Start by drawing the battery. From its positive terminal, draw a wire to one side of the switch. From the other side of the switch, draw a wire to one terminal of the lamp. From the other terminal of the lamp, draw a wire to one terminal of the electromagnet. Finally, draw a wire from the other terminal of the electromagnet back to the negative terminal of the battery.

Here is a description of the circuit layout:

• Draw the battery symbol.
• Connect a wire from the positive terminal of the battery to one side of the switch symbol.
• Connect a wire from the other side of the switch to one terminal of the lamp symbol.
• Connect a wire from the other terminal of the lamp to one terminal of the electromagnet symbol.
• Connect a wire from the other terminal of the electromagnet back to the negative terminal of the battery.

Draw arrows along the wires in the circuit, showing the current flowing from the positive terminal of the battery, through the switch, lamp, and electromagnet, and returning to the negative terminal of the battery.

(Arrows indicate the direction of conventional current flow.)