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The initial potential difference across a capacitor is $V_0$ - AQA - A-Level Physics - Question 22 - 2019 - Paper 2
Question 22
The initial potential difference across a capacitor is $V_0$. The capacitor discharges through a circuit of time constant $T$. The base of natural logarithms is $e$.... show full transcript
Worked Solution & Example Answer:The initial potential difference across a capacitor is $V_0$ - AQA - A-Level Physics - Question 22 - 2019 - Paper 2
Step 1
What is the potential difference across the capacitor after time $T$?
Answer
To find the potential difference across the capacitor at time , we can use the formula for the discharging of a capacitor, which is given by:
Substituting with , we have:
Therefore, the potential difference across the capacitor after time is , which corresponds to option B.