Circuit Diagram and Symbols

Front

Back

Voltmeter

Front

Back

variable resistor

Front

Back

LED (light emitting diode)

Front

Back

fixed resistor

Front

Back

power supply OR battery pack

Front

Back

switch

Front

Back

wire

Front

Back

globe / lamp

Front

Back

serial circuit

_{Image attribution: يحيى بن علي, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons}

Front

Back

parallel circuit

_{Image attribution: HKG2007, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons}