Year 6 Electricity Worksheet - Intermediate

Year 6 Electricity worksheet for Year 6 (Key Stage 2 / Year 3-6 (Ages 7-11)). Intermediate level science practice, aligned to the UK National Curriculum. Print-ready with answer key included.

Science•Key Stage 2 / Year 3-6 (Ages 7-11)•Electricityintermediate

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Electric Circuits: Symbols, Cells and Sound

Year 6 • Ages 10–11 • Intermediate

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Instructions: Use the circuit-symbol key and the results provided to answer each question. Remember that a cell supplies voltage, and adding cells in series increases the total voltage; the effect on a bulb or buzzer depends on the components and their ratings. Write clearly in each answer box.

Recognise Circuit Symbols

Use the word bank to name each circuit symbol. Match each description to one term and write the term in the box.

Word bank: cell, battery, bulb, buzzer, open switch, closed switch

1. One long line beside one short line; supplies electrical energy.

2. Two or more cell symbols connected together.

3. A circle with a cross inside; it can produce light.

4. A component that makes a sound when current flows through it.

5. A switch symbol with a gap in the conducting path.

6. A switch symbol that completes the conducting path.

Draw Circuit Symbols

Draw each symbol in its box. For a cell, show one long line and one short line; for a battery, show two cell pairs. Use a recognisable circuit-symbol convention for the other components.

1. Draw a cell symbol.

2. Draw a battery symbol made from two cells.

3. Draw a bulb symbol.

4. Draw an open switch symbol.

Cells and Bulb Brightness

A class tested identical bulbs in complete circuits using the same type of cell. They changed only the number of cells connected in series. Use the results to answer the questions; do not assume brightness increases by an exact amount for each extra cell.

Cells in series	Voltage (V)	Bulb brightness (relative units)	Observation
1	1.5	2	dim
2	3.0	4	brighter
3	4.5	6	brightest tested
4	6.0	Not tested	do not predict

1. How much voltage does each cell provide?

2. What happened to the bulb brightness when the number of cells increased from one to three?

3. How many volts are supplied by two cells in series?

4. The four-cell result was not tested. What should the class do before claiming how bright the bulb will be?

Voltage and Buzzers

The same buzzer was tested in complete circuits, using cells connected in series. Read each recorded observation carefully. Use the evidence rather than guessing an exact sound level.

Cells in series	Total voltage (V)	Buzzer observation	Test status
1	1.5	quiet sound	tested
2	3.0	louder sound	tested
3	4.5	loudest in these tests	tested
4	6.0	No observation	not tested

1. What was the total voltage with three cells?

2. How did the buzzer sound with two cells compared with one cell?

3. Which tested set-up produced the loudest sound?

4. Can we conclude from this table exactly how a four-cell circuit would sound? Explain briefly.

Plan a Fair Circuit Test

For each question, describe a sensible test or conclusion using circuit ideas. Keep the number of components and their type the same when comparing the effect of changing cells.

1. To test whether adding cells makes a bulb brighter, what should you change and what should you keep the same?

2. A bulb is very bright with three cells. Give one reason to check the bulb’s rating before adding another cell.

3. A buzzer does not sound in a circuit. Name one circuit feature to check before changing the voltage.

4. A pupil says, “More cells always make every bulb and buzzer work better.” Give one evidence-based reason this claim is too broad.

Answer Key

Activity 1: cell ; battery ; bulb ; buzzer ; open switch ; closed switch

Activity 2: Drawings should show, respectively, one long and one short parallel line; two cell pairs; a circle with a cross; and a switch with a gap.

Activity 3: 1. 1.5 V ; 2. It increased from dim (2 units) to brightest tested (6 units) ; 3. 3.0 V ; 4. Test the four-cell circuit safely and record its brightness before making a claim.

Activity 4: 1. 4.5 V ; 2. It was louder ; 3. Three cells ; 4. No. The four-cell circuit was not tested, so its sound is unknown from this evidence.

Activity 5: 1. Change the number of cells; keep the bulb, cell type, circuit connections and other components the same, and compare brightness ; 2. Extra voltage could exceed the bulb’s rating and damage it or make it fail ; 3. Check that the circuit is complete, for example that the switch is closed and connections are secure ; 4. The results show an increase only for the tested components and voltages; an untested set-up or a component’s rating may limit performance or cause damage.