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. Fig. 2.1 shows part of the circuit that the student assembles. Fig. 2.1 Complete the circuit by adding the correct symbol for an LDR between Y and Z . Choose from the list provided in Fig. 2.2. Fig. 2.2

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