A LevelPhysicsEdexcelExam Questions7. Electric & Magnetic FieldsCapacitance

Capacitance (Edexcel A Level Physics): Exam Questions

Exam code: 9PH0

45 mins6 questions

1 mark

A capacitor is connected to a power supply and charged to a potential difference V₀.

The graph shows how the potential difference V across the capacitor varies with the charge Q on the capacitor.

q9-nov-2021-9ph0-01-edexcel-as-a-level-phy

At a potential difference V₀ a small charge ∆Q is added to the capacitor. This results in a small increase in potential difference ∆V across the capacitor.

Which of the following gives the approximate increase in energy stored on the capacitor due to this extra charge?

$∆ V \times ∆ Q$
$\frac{∆ V \times ∆ Q}{2}$
$V_{0} \times ∆ Q$
$\frac{V_{0} \times ∆ Q}{2}$

Choose your answer

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