AS Level Circuit Symbols

What does the earthing symbol represent in a circuit diagram?

• Symbol for battery connection

• Connection to ground for safety and to prevent electrical hazards

• Indicator of a closed switch

• Representation of a resistor

Identify the symbol that represents an electric bell.

• ⚪

• ⚙️

• ⛉

• ⚫

Which symbol is used to denote a buzzer in a circuit diagram?

• Triangle with a line through it

• Circle with a dot inside

• Rectangle with a small circle inside

• Square with a zigzag line

In a circuit diagram, what does the microphone symbol indicate?

• Presence of a microphone in the circuit

• Signifies the presence of a battery in the circuit

• Represents a light sensor in the circuit

• Indicates the presence of a speaker in the circuit

What component is represented by the loudspeaker symbol in a circuit diagram?

• speaker

• amplifier

• resistor

• microphone

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

• Rectangle with a squiggly line inside

• Triangle with a lightning bolt inside

• Square with a minus sign inside

• Circle with a plus sign inside

Identify the symbol for a potentiometer in a circuit diagram.

• Resistor-like shape with an arrow pointing towards the middle terminal

• Square with two parallel lines inside

• Triangle shape with a line through the middle

• Circle with a dot in the center

What does the diode symbol signify in a circuit diagram?

• It represents a component that permits current flow in one direction only.

• It represents a component that blocks current flow in one direction only.

• It indicates a component that regulates current flow based on temperature.

• It signifies a component that amplifies current in both directions.

In a circuit diagram, what does the oscilloscope symbol represent?

• Representation of a battery

• Device used to measure voltage signals over time

• Symbol for a resistor

• Indicator for a transistor

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

• A wavy line

• A straight line

• A circle

• A pair of parallel lines