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Electricity from the power station can be generated using renewable or non-renewable energy resources - AQA - GCSE Physics - Question 7 - 2022 - Paper 1

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Electricity from the power station can be generated using renewable or non-renewable energy resources. Complete Table 2 to show which energy resources are renewable... show full transcript

Worked Solution & Example Answer:Electricity from the power station can be generated using renewable or non-renewable energy resources - AQA - GCSE Physics - Question 7 - 2022 - Paper 1

Step 1

Complete Table 2 to show which energy resources are renewable and which are non-renewable energy resources.

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Answer

Energy resourceRenewableNon-renewable
biofuel✔
coal✔
nuclear✔
tides✔

Step 2

The step-up transformer increases the ____________________ and decreases the ____________________.

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Answer

potential difference and decreases the current.

Step 3

Using the transformers decreases the ____________________ transfer from the overhead transmission cables to the surroundings.

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energy

Step 4

The step-down transformer decreases the ____________________.

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Answer

potential difference.

Step 5

Write down the equation which links charge flow (Q), current (I) and time (t).

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Answer

The equation is given by: Q=IimestQ = I imes t

Step 6

Calculate the charge flow from the battery in 5 minutes.

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Answer

First, convert 5 minutes to seconds:

5extminutes=5imes60=300extseconds5 ext{ minutes} = 5 imes 60 = 300 ext{ seconds}

Using the equation:

Q=Iimest=130,000extAimes300exts=39,000,000extCQ = I imes t = 130,000 ext{ A} imes 300 ext{ s} = 39,000,000 ext{ C}

Thus, the charge flow is 39,000,000 coulombs.

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