Chang wants to build a circuit that will light up a bulb from a flashlight, and has a battery, switch, wire, and a light bulb.Which component would Chang use as the source of energy?
A symbol from a circuit diagram is shown.

What symbol would best represent an electric fan speed controller in an electric circuit?
Patty makes a table of the symbols used for the parts of an electric circuit.

Roshan describes the basic parts of an electric circuit using a shower as a model. Which part of a circuit does the water pipe represent?
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