Draw circuit diagrams of the circuits you designed.
The circuit diagram should show standard electrical symbols: (1) Battery symbol - long and short parallel lines representing positive and negative terminals. (2) Switch symbol - a break in the line that can be opened or closed. (3) Resistor symbol - zigzag line representing 220 ohm resistance. (4) LED symbol - diode symbol with arrows pointing outward indicating light emission, with triangle pointing toward the cathode. All components should be connected in series forming a complete closed loop for current flow.
Explanation
The chapter provides basic symbols used in electrical and electronic circuits including battery, resistance, switch, diode, LED, capacitor, and earthing. Students should use these standard symbols to accurately represent their physical circuits in diagram form.