A student investigates a light-dependent resistor (LDR). The student assembles a series circuit consisting of a power supply, a switch, a $$\(470 \Omega\)$$ resistor and an LDR. The student: - closes the switch - connects a voltmeter across the $$\(470 \Omega\)$$ resistor - records the reading on the voltmeter - opens the switch. On Fig. 2.1, draw a voltmeter connected to measure the potential difference (p.d.) across the $$\(470 \Omega\)$$ resistor. (ii) The voltmeter reading is shown in Fig. 2.3. Fig. 2.3 Record the voltmeter reading $$\(V_{X Y}\)$$. $$\[ V_{X Y}=\ldots \ldots \ldots \ldots \ldots . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . V \]$$

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