MHT CET · Physics · Capacitance
A parallel plate capacitor is charged and then isolated. If the separation between the plates is increased, which one of the following statement is NOT correct?
- A Charge remains constant after it is isolated.
- B Potential difference across the plates decreases.
- C Potential difference across the plates increases.
- D Capacitance of capacitor decreases.
Answer & Solution
Correct Answer
(B) Potential difference across the plates decreases.
Step-by-step Solution
Detailed explanation
After separation (d) is increased:
Capacity decreases as \(\mathrm{C}=\frac{\varepsilon_0 \mathrm{~A}}{\mathrm{~d}}\)
\(V=\frac{Q}{C}\)
Potential increases as capacitance decreases.
\(\therefore \quad\) Option B is incorrect
Capacity decreases as \(\mathrm{C}=\frac{\varepsilon_0 \mathrm{~A}}{\mathrm{~d}}\)
\(V=\frac{Q}{C}\)
Potential increases as capacitance decreases.
\(\therefore \quad\) Option B is incorrect
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