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Questions and Answers
Match the following electrical components with their symbols:
Match the following electrical components with their symbols:
Cell = + - Battery of cells = + - Switch = --- Earth = ↓
Match the following power components with their symbols:
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:
Match the following measuring instruments with their symbols:
Ammeter = A Voltmeter = V Galvanometer = --- Oscilloscope =
Match the following resistors with their symbols:
Match the following resistors with their symbols:
Match the following audio components with their symbols:
Match the following audio components with their symbols:
Flashcards
Cell Symbol
Cell Symbol
Represents a single battery cell, showing positive (+) and negative (-) terminals.
Battery Symbol
Battery Symbol
Represents multiple battery cells connected together, showing positive (+) and negative (-) terminals.
Switch Symbol
Switch Symbol
Represents a device that can control the flow of current, often shown as a break or connection.
Resistor Symbol (fixed)
Resistor Symbol (fixed)
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Ammeter Symbol
Ammeter Symbol
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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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