This question is about using the mains electricity supply - Edexcel - GCSE Physics - Question 5 - 2021 - Paper 1

Using the equation for energy transfer:
$E = I \times V \times t$
Substituting the values:
$E = 7.4 \text{ A} \times 230 \text{ V} \times 120 \text{ s}$
Calculating this gives:
$E = 204240 \text{ J}$
So, the energy transferred to the coffee machine is 204000 J.

Wire X = neutral
Wire Y = live

Component Z = fuse

Using the efficiency equation:
$\text{input current} \times \text{230 V} = 2.37 \text{ A} \times 190 \text{ V}$
Rearranging gives:
$\text{input current} = \frac{2.37 \times 190}{230} \approx 1.88 \text{ A}$
Thus, the input current to the transformer is approximately 1.88 A.