Cambridge Secondary (7-9). Stage 9. MCE Science. Workbook - Unit 12: Electrical Circuits - Question 21

Materials: three resistors (100 Ω, 200 Ω, 300 Ω), a 9 V battery and battery clip, connecting wires, multimeter, breadboard (optional).

For the series-resistor experiment, as a class, discuss the possible reasons for differences between the measured and calculated results.