3 13100.04 Question 1 Requirements • plastic measuring cylinder capacity 250 ml • 2 × 500 ml beaker • 30 cm ruler to 0.1 cm • 2 mm drill bit and drill • sink or basin to collect water • stopclock reading to 0.01 s • vernier caliper • adhesive tape • red food colouring Question 2 Requirements • 1 × 820 μF capacitor > 2 V working voltage • 1 × 120 μF capacitor > 2 V working voltage • 1 × red, 1 × black 4mm binding post panel mount • 2 × 4 mm connecting wire • white adhesive labels • SPDT switch • enclosure 85 × 60 × 40 mm or larger • 1.5 V cell • 1.5 V cell holder • digital voltmeter range 0 – 2 V, reading to 0.001V