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Cambridge Secondary (7-9). Stage 7. Science. Learner's Book - Unit 9: Electricity - Question 50

Cambridge Secondary (7-9) · Unit 9: Electricity

Question 50

In this task, you will make and test predictions about current in a circuit.
Work in groups.
You will need (for each group): a cell (or cells) that can operate two lamps in series, a switch, lamps, an ammeter, wires and connectors.
Safety: Never connect an ammeter directly across the terminals of a cell, battery or other power supply.

Part 2
4 Connect the ammeter into your circuit. Connect it at position X.
5 Close the switch and record the ammeter reading.
6 Do this two more times, once with the ammeter in position Y, and once with the ammeter in position Z. Remember to open the switch before you make changes.
7 Copy the three circuit diagrams.
8 Write your ammeter readings next to each circuit diagram.

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