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A student sets up a circuit using a diode, a lamp and a variable resistor, as shown in Fig - OCR Gateway - GCSE Physics - Question 17 - 2021 - Paper 1
Question 17
A student sets up a circuit using a diode, a lamp and a variable resistor, as shown in Fig. 17.1. Draw a cell in the circuit on Fig. 17.1 so that the lamp would lig... show full transcript
Worked Solution & Example Answer:A student sets up a circuit using a diode, a lamp and a variable resistor, as shown in Fig - OCR Gateway - GCSE Physics - Question 17 - 2021 - Paper 1
Step 1
Draw a cell in the circuit.
Answer
To make the lamp light up, we need to complete the circuit by drawing a cell (or battery) in the correct orientation. The cell should be connected in series with the diode, lamp, and variable resistor.
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Positioning the Cell: Place the cell at the top left of the diagram, with the positive terminal pointing towards the diode.
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Connecting the Components: Ensure that the negative terminal of the cell connects to the variable resistor. The other end of the variable resistor should connect back to the lamp, creating a closed circuit.
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Diagram Representation: The completed representation will have the cell, a diode oriented to allow current flow, a lamp to light up, and a variable resistor to adjust the current.
This arrangement ensures that the lamp receives voltage from the cell, allowing current to flow and light up the lamp.