NEW
Font size
WorksheetsElectrical Circuit Symbols and Components
Total questions: 20
Worksheet time: 10mins
Which symbol best represents an AC power source in a circuit diagram?
Two parallel plates facing each other
Circle with plus and minus signs
Circle with letter A inside
Circle with sine wave inside
An ammeter is connected in series to measure current. Which symbol identifies an ammeter?
Circle labeled A
Circle labeled Ω
Circle with sine wave
Circle labeled V
Which symbol corresponds to a capacitor component?
Arrow over zig‑zag
Zig‑zag line
Two parallel plates
Circle with coil terminals
Which diagram element indicates a fixed resistor?
Circle with sine wave
Zig‑zag line segment
Circle labeled V
Two parallel plates
You need a symbol for a variable resistor used to control brightness. Which symbol should you choose?
Zig‑zag only
Circle labeled A
Two plates facing
Zig‑zag with arrow
Which symbol represents a DC power source?
Circle labeled A
Circle with sine wave
Long and short parallel lines
Zig‑zag with arrow
Identify the voltmeter symbol used to measure potential difference.
Circle labeled Ω
Circle labeled A
Circle labeled V
Two parallel plates
Which symbol indicates an ohmmeter?
Circle labeled Ω
Circle labeled V
Circle labeled A
Circle with sine wave
A buzzer is shown in diagrams as which of the following?
Circle with plus and minus
Small speaker‑like circle
Two parallel plates
Zig‑zag line
Which symbol denotes an indicator light (lamp) in a circuit?
Circle with sine wave
Circle labeled V
Circle with small cross
Zig‑zag with arrow
When a normally closed push‑button is not pressed, its contacts are in what state?
Latched by relay
Shorted to ground
Open not conducting
Already closed conducting
Which symbol shows a normally open push‑button in its resting state?
Contacts separated open
Contacts touching closed
Zig‑zag resistor
Two parallel plates
You need a knife switch symbol to depict a manual lever switch. Which looks correct?
Zig‑zag line
Circle labeled A
Two parallel plates
Pivoted blade touching contact
Which choice represents a selector switch with multiple positions?
Circle labeled Ω
Two parallel plates
One fixed contact only
Branching contacts selectable
A relay coil is drawn as which symbol?
Circle labeled V
Two parallel plates
Zig‑zag resistor
Small rectangle coil
Relay contacts labeled NO are in what condition at rest?
Open until energized
Closed until energized
Connected to coil directly
Shorted permanently
Which symbol depicts a rheostat distinct from a fixed resistor?
Zig‑zag with sliding arrow
Circle labeled A
Plain zig‑zag line
Two parallel plates
A solenoid actuator is commonly represented by which figure?
Circle labeled Ω
Circle with sine wave
Two parallel plates
Coil symbol driving plunger
Which symbol identifies a DC motor on a schematic?
Circle with M terminals
Zig‑zag with arrow
Two parallel plates
Circle labeled V
A toggle switch symbol shows a lever that changes state. Which option matches?
Zig‑zag resistor
Circle labeled A
Two parallel plates
Angled lever between contacts
