The National Grid ensures that the supply of electricity always meets the demand of the consumers - AQA - GCSE Physics - Question 11 - 2018 - Paper 1
Question 11
The National Grid ensures that the supply of electricity always meets the demand of the consumers.
Figure 13 shows how the output from fossil fuel power stations in... show full transcript
Worked Solution & Example Answer:The National Grid ensures that the supply of electricity always meets the demand of the consumers - AQA - GCSE Physics - Question 11 - 2018 - Paper 1
Step 1
Suggest one reason for the shape of the graph between 15.00 and 18.00 on Monday.
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Answer
The shape of the graph between 15.00 and 18.00 on Monday indicates an increase in power output. This is likely due to the increase in demand, as many people return home from work or school during this period, leading to more electrical appliances being used.
Step 2
Suggest one time on Figure 13 when the demand for electricity was low.
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Answer
One time on Figure 13 when the demand for electricity was low is at 00:00 (midnight).
Step 3
Suggest two reasons why.
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Answer
Fossil fuel power stations conserve fuel reserves by not operating at maximum output continuously.
They provide spare capacity to compensate for unreliable renewable resources, ensuring a stable supply and minimizing environmental impact.
