Physics (AS & A Level) · Feb / March 2024 · Paper 12 · Question 19
The battery of a small tablet computer is initially uncharged. It is connected to a constant 10 W power supply for 2.0 hours to charge the battery. The efficiency of the charging process is 80%. What is the total energy stored in the battery?
- A1.6 × 10¹ J
- B1.6 × 10³ J
- C5.8 × 10⁴ J
- D5.8 × 10⁶ J
As printed in the paper
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Correct answer: C. 5.8 × 10⁴ J
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