Electronics IQ: Circuit Symbols Answers

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Electronic circuit symbols are used for drawing schematic diagrams. The symbols below represent electrical and electronic components. Here are the answers and results to our circuit symbol quiz.

This symbol represents a Single Pole Double Throw (SPDT) switch, which selects between two connections in a circuit. A switch breaks, interrupts, or diverts the current from one conductor to another.

This breaks, interrupts, or diverts the current from one conductor to another.
Answer Options	Response Percent	Response Count
SPDT Toggle Switch Non-connected wires Resistor Voltmeter	98.9% 0.6% 0.2% 0.3%	6794 42 16 17

A potentiometer is an adjustable resistor with three terminals in a circuit drawing. A "pot" provides variable resistance.

A simple knob that provides a variable resistance.
Answer Options	Response Percent	Response Count
Bipolar Transistor Zener Diode Potentiometer Volume Switch	1.4% 0.8% 95.6% 2.3%	94 53 6629 157

This symbol represents a photodiode, which allows current flow only when exposed to light. It converts visible electromagnetic radiation (light) into either current or voltage.

Converts visible electromagnetic radiation into either current or voltage.
Answer Options	Response Percent	Response Count
Photodiode Light Emitting Diode Polarized Capacitor Buzzer	86.6% 12.4% 0.9% 0.1%	5974 856 62 6

A MOSFET transistor is used to amplify and switch electronic signals and power. It uses an electric field to control the flow of electrons and shapes the conductivity of a channel.
MOSFET = metal-oxide-semiconductor field-effect transistor.

Uses an electric field to control the flow of electrons and shapes the conductivity of a channel. Pay close attention to this symbol!
Answer Options	Response Percent	Response Count
MOSFET Transistor Bipolar Transistor AC Voltage Source Variable Inductor	88.2% 9% 0.6% 2.2%	6057 619 42 152

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Here are some useful sites with more information on circuit symbols:
The Electronics Club
RapidTables.com
Wikipedia Circuit Symbols.

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