Electronics Worksheet: Circuit Symbols
Remember (Shape tells the part): Cell: long and short line (long = +). Battery: two or more cells. Wire: straight line. Junction: a dot. Bulb: circle with a cross. Switch: line lifted at a gap. Resistor: rectangle. Capacitor: two equal parallel lines. Diode: triangle against a bar; LED: the same with two arrows out. Circle with M = motor, A = ammeter, V = voltmeter.
NameDateTime takenScore ___ / 40
- 1.✏️ In a circuit diagram, which part is drawn as a small empty box? (a) resistor (b) capacitor (c) bulb (d) ammeter
- 2.Which drawing is the symbol for a motor? (a) a circle with M inside (b) one tall, one short bar (c) many long-short pairs (d) two or more cell symbols
- 3.✏️ In a circuit diagram, which part is drawn as triangle against a bar? (a) junction (b) capacitor (c) cell (d) diode
- 4.True or false: two or more cell symbols is the symbol for a battery. (a) True (b) False
- 5.Which drawing is the symbol for a battery? (a) two or more cell symbols (b) a circle with an X in it (c) a circle with A inside (d) a circle with M inside
- 6.True or false: a circle with a cross is the symbol for a junction. (a) True (b) False
- 7.✏️ In a cell symbol, which line is the + terminal? (a) both lines (b) neither line (c) the longer line (d) the shorter line
- 8.✏️ In a circuit diagram, wires are usually drawn as … (a) little stars (b) dotted circles (c) straight lines (d) wavy lines
- 9.✏️ In a circuit diagram, which part is drawn as two or more cell symbols? (a) battery (b) LED (c) resistor (d) wire
- 10.✏️ In a circuit diagram, which part is drawn as a circle with V inside? (a) voltmeter (b) battery (c) wire (d) junction
- 11.Which drawing is the symbol for a junction? (a) a circle with A inside (b) a dot where wires meet (c) triangle against a bar (d) one tall, one short bar
- 12.True or false: a circle with A inside is the symbol for a voltmeter. (a) True (b) False
- 13.True or false: two or more cell symbols is the symbol for a resistor. (a) True (b) False
- 14.✏️ Why do engineers draw circuits with symbols? (a) to make it colourful (b) symbols are heavier (c) to hide the circuit (d) quick and clear for all
- 15.✏️ In a circuit diagram, which part is drawn as a line lifted at a gap? (a) motor (b) switch (c) diode (d) bulb
- 16.✏️ In a circuit diagram, which part is drawn as one tall, one short bar? (a) LED (b) wire (c) cell (d) bulb
- 17.✏️ In a circuit diagram, which part is drawn as a plain rectangle? (a) ammeter (b) resistor (c) junction (d) battery
- 18.True or false: many long-short pairs is the symbol for a junction. (a) True (b) False
- 19.✏️ In a circuit diagram, which part is drawn as a circle with M inside? (a) ammeter (b) wire (c) bulb (d) motor
- 20.True or false: one tall, one short bar is the symbol for a cell. (a) False (b) True
- 21.✏️ In a circuit diagram, which part is drawn as a circle with an X in it? (a) voltmeter (b) bulb (c) cell (d) wire
- 22.True or false: triangle against a bar is the symbol for a capacitor. (a) True (b) False
- 23.✏️ In a circuit diagram, which part is drawn as a circle with a cross? (a) resistor (b) motor (c) switch (d) bulb
- 24.True or false: a circle with A inside is the symbol for a junction. (a) False (b) True
- 25.✏️ In a circuit diagram, which part is drawn as a straight line? (a) resistor (b) wire (c) bulb (d) cell
- 26.True or false: triangle against a bar is the symbol for an ammeter. (a) False (b) True
- 27.Which drawing is the symbol for a diode? (a) one tall, one short bar (b) a circle with V inside (c) a dot where wires meet (d) triangle against a bar
- 28.Which drawing is the symbol for a wire? (a) two equal parallel lines (b) a straight line (c) a line lifted at a gap (d) a circle with M inside
- 29.True or false: many long-short pairs is the symbol for a battery. (a) True (b) False
- 30.True or false: two or more cell symbols is the symbol for a switch. (a) True (b) False
- 31.✏️ In a circuit diagram, which part is drawn as two equal parallel lines? (a) voltmeter (b) capacitor (c) bulb (d) wire
- 32.True or false: a circle with A inside is the symbol for an ammeter. (a) True (b) False
- 33.✏️ In a circuit diagram, which part is drawn as a circle with A inside? (a) ammeter (b) switch (c) LED (d) resistor
- 34.Which drawing is the symbol for a bulb? (a) one tall, one short bar (b) a circle with a cross (c) a circle with V inside (d) two or more cell symbols
- 35.True or false: a dot where wires meet is the symbol for a junction. (a) False (b) True
- 36.Which drawing is the symbol for an ammeter? (a) a long and a short line (b) a circle with A inside (c) a dot where wires meet (d) two or more cell symbols
- 37.Which drawing is the symbol for an LED? (a) a circle with M inside (b) triangle against a bar (c) triangle, bar and arrows (d) a circle with a cross
- 38.✏️ In a circuit diagram, which part is drawn as a long and a short line? (a) junction (b) battery (c) capacitor (d) cell
- 39.Which drawing is the symbol for a voltmeter? (a) a small empty box (b) a long and a short line (c) a straight line (d) a circle with V inside
- 40.True or false: two equal parallel lines is the symbol for an LED. (a) True (b) False
Answer key
- resistor
- a circle with M inside
- diode
- True
- two or more cell symbols
- False
- the longer line
- straight lines
- battery
- voltmeter
- a dot where wires meet
- False
- False
- quick and clear for all
- switch
- cell
- resistor
- False
- motor
- True
- bulb
- False
- bulb
- False
- wire
- False
- triangle against a bar
- a straight line
- True
- False
- capacitor
- True
- ammeter
- a circle with a cross
- True
- a circle with A inside
- triangle, bar and arrows
- cell
- a circle with V inside
- False
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