A student is trying to find out how the resistance of a light-dependent resistor (LDR) changes as the brightness of the light in the room changes.
(a)[3]
Three mistakes have been made by the student. Identify the three mistakes in the student’s circuit.
(b(i))[1]
Using the information in Fig. 10.2, Describe how the brightness of the light in the room changes the resistance of the LDR.
(b(ii))[4]
Calculate the current in the LDR when the light is at 60% of full brightness.
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