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Questions and Answers
Match the following electrical components with their symbols:
Cell = + - Battery of cells = + - Switch = --- Earth = ↓
Match the following power components with their symbols:
AC power supply = ~ Power supply = --- Generator = G Motor = M
Match the following measuring instruments with their symbols:
Ammeter = A Voltmeter = V Galvanometer = --- Oscilloscope =
Match the following resistors with their symbols:
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Match the following audio components with their symbols:
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Study Notes
Electrical Circuit Symbols
- Cell: A single source of electrical energy. Represented by two parallel lines of different length.
- Battery of Cells: Multiple cells connected together. Shown as multiple cells in a row.
- Switch: Used to control the flow of current in a circuit. A simple line with a break.
- Earth: A connection to the ground. Represented by a downward-pointing arrow or a line, which terminates in a point.
- Power Supply: A source of electrical energy indicated by a line and circle.
- A.C. Power Supply: An alternating current source represented by a wavy line connected to a circle.
- Junction of Conductors: A point where wires connect. Shown as a single point where wires meet.
- Lamp: A light bulb. Represented by a circle with an "X" inside of it.
- Fixed Resistor: A component that resists current flow. Represented by a rectangular shape.
- Variable Resistor (Rheostat): A resistor with adjustable resistance. Shown as a rectangular shape with an arrowhead inside.
- Thermistor: A temperature-sensitive resistor. Represented by a resistor shape with two lines extending outward and diagonal lines coming up.
- Light-Dependent Resistor (LDR): A resistor whose resistance changes depending on the amount of light. Represented by a resistor with a light-bulb shape on top of it.
- Heater: A component that generates heat. Shown as a series of horizontal lines inside a box.
- Voltmeter: A device used to measure voltage. Shown as a circle with "V" inside.
- Ammeter: A device used to measure current. Represented by a circle with "A" inside.
- Galvanometer: A delicate device used to measure small currents; a similar shape to an ammeter.
- Potentiometer: An instrument used to measure voltage. Represented by a rectangular box with a curved line extending out of one end.
- Diode: Lets current flow in one direction only. A triangle with a line extending from it.
- Light-Emitting Diode (LED): Emits light when current flows through it. It is similar to a diode with two arrowheads pointing out.
- Capacitor: Stores electrical energy in an electric field. Represented by two parallel lines connected to the sides.
- Microphone: Used to convert sound energy to electrical energy. Represented by a series of lines and circles on an arched structure between two lines.
- Loudspeaker: Converts electrical energy back into sound energy. Shown as a circle with a double arrow facing outwards.
- Motor: Converts electrical energy to mechanical energy. Similar to a rectangle with angled lines forming a spiral inside.
- Generator: Converts mechanical energy to electrical energy. Represented by a circle with a shape that resembles an arrow inside.
- Electronic Bell: Shown as a shape similar to a bell with lines connected vertically to it.
- Buzzer: An electromechanical device that produces a buzzing sound. A single circle with a wavy line around it.
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Description
Test your knowledge of common electrical circuit symbols with this quiz. From cells to switches, you will learn how to identify and understand each symbol's purpose. Perfect for students studying electronics or electrical engineering.
