0 2 Figure 2 shows part of a set of decorative lights in a garden. 0 2. 2 The current in one lamp is 0.25 A. Figure 2 The potential difference across the lamp is 2.2 V. Calculate the resistance of the lamp. Use the equation: resistance _ Potential difference current Choose the unit from the box. C J [3 marks] The decorative lights contain identical filament lamps connected in series. The decorative lights are connected to an electricity supply with a potential difference of 110 V. The potential difference across each lamp is 2.2 V. Resistance = Unit 0 2. 1 Determine the number of lamps in the set of decorative lights. [2 marks] A different set of decorative lights contains light-emitting diode (LED) lamps instead of filament lamps. Number of lamps = 0 2. 3 What is the circuit symbol for an LED? [1 mark] Tick ( ) one box. 0 02 14 The current in one LED lamp is 12% of the current in one filament lamp. The current in one filament lamp is 0.25 A. Calculate the current in one LED lamp. [1 mark] Current = 2 5 Suggest one advantage of having a lower current in the decorative lights containing LED lamps. [1 mark] [ Total 8 marks]