The photograph shows a laptop computer plugged into the 230 V mains - Edexcel - GCSE Physics - Question 3 - 2016 - Paper 1

To calculate the cost of leaving the laptop on standby for 24 hours:

1. Convert power consumption to kilowatts:

   $$3.2 ext{ W} = 0.0032 ext{ kW}$$

2. Calculate energy consumed in kWh:

   $$ext{Energy (kWh)} = ext{Power (kW)} imes ext{Time (h)}$$

   Here, Time = 24 hours, so:

   $$ext{Energy} = 0.0032 ext{ kW} imes 24 ext{ h} = 0.0768 ext{ kWh}$$

3. Calculate the cost:

   $$ext{Cost} = ext{Energy (kWh)} imes ext{Cost per kWh}$$

   By substituting the values:

   $$ext{Cost} = 0.0768 ext{ kWh} imes 14 ext{ p} = 1.0752 ext{ p}$$

4. Round the final cost:

   Thus, the cost of leaving the laptop on standby for 24 hours is approximately 1.1 p.