Figure 1 shows a solar-powered charger for a mobile phone - Edexcel - GCSE Physics - Question 1 - 2016 - Paper 1
Question 1
Figure 1 shows a solar-powered charger for a mobile phone.
The screen of the solar cell takes in energy from the Sun.
(a)(i) Describe how energy from the Sun is ca... show full transcript
Worked Solution & Example Answer:Figure 1 shows a solar-powered charger for a mobile phone - Edexcel - GCSE Physics - Question 1 - 2016 - Paper 1
Step 1
Describe how energy from the Sun is carried to the solar cell.
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Answer
The energy from the Sun is carried to the solar cell by electromagnetic waves.
Step 2
What type of energy is stored in the rechargeable battery?
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Answer
The type of energy stored in the rechargeable battery is chemical energy.
Step 3
Calculate the energy transferred to the battery if the solar cell produces 0.12 A of current at 77 V for 1 hour.
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Answer
To calculate the energy transferred, we first need to find the power:
Power = Voltage x Current
Substituting the values:
Power = 77 V x 0.12 A = 9.24 W
Now, to find the energy transferred in one hour (3600 seconds):
Energy = Power x Time
Energy = 9.24 W x 3600 s = 33264 J
Therefore, the total energy transferred to the battery is 33264 Joules.
