Electrical Symbols Quiz

What does the resistor symbol look like in a circuit diagram?

• A) A straight line with a circle at each end

• B) A zig-zag line

• C) A triangle pointing to the right

• D) A series of parallel lines connected by a single line

Which symbol is used to represent a capacitor in circuit diagrams?

• A) Two parallel lines with a gap between them

• B) A solid rectangle

• C) A line intersected by a circle

• D) Two opposing triangles

How is a diode symbol typically represented in electrical diagrams?

• A) A triangle pointing towards a line

• B) A circle with a cross inside

• C) A rectangle divided into two equal parts

• D) A zig-zag line

What symbol represents a transistor in circuit diagrams?

• A) A rectangle with three lines extending from it

• B) A circle with three lines extending from it

• C) A triangle with a line through the base

• D) A circle with a T inside

Which of the following symbols is used to denote ground in electrical schematics?

• A) A series of three horizontal lines decreasing in size

• B) A single vertical line

• C) A square

• D) An arrow pointing downwards

How is a battery symbolized in circuit diagrams?

• A) A series of cells with alternating lines

• B) A single long line parallel to a shorter line

• C) A rectangle with a plus and minus sign

• D) Two parallel zig-zag lines

What symbol is used to represent a switch in an open state in circuit diagrams?

• A) A line intersected by a diagonal line

• B) A circle with a line through it

• C) Two parallel lines with a gap

• D) A rectangle with a line inside

How is a closed switch symbolized in electrical schematics?

• A) A line with a circle at the intersection

• B) Two lines touching each other

• C) A line intersected by another line at a right angle

• D) A rectangle divided by a vertical line

Which symbol represents an electrical socket in circuit diagrams?

• A) A square with two smaller squares inside

• B) A circle with two vertical lines

• C) A rectangle with three lines inside

• D) Two parallel horizontal lines with a circle above

What symbol is used to denote the mains distribution in electrical schematics?

• A) A circle with a single line through it

• B) A square with a lightning bolt inside

• C) A rectangle with a grid pattern inside

• D) A triangle with a wave inside