A parallel plate capacitor is connected to a battery as shown.
Consider two situations:
A: Key K is kept closed and plates of capacitors are moved apart using insulating handle.
B: Key K is opened and plates of capacitors are moved apart using insulating handle.
Which of the following are correct?
(a) In A : Q remains same but C changes.
(b) In B : V remains same but C changes.
(c) In A : V remains same and hence Q changes.
(d) In B : Q remains same and hence V changes.
Answer & explanation
Correct answer: option 4
In case of A, Potential remains same as connected to battery, Now C changes as the distance change ,so the charge changes. In case of B, charge remains same as not connected to battery, Now C changes as the distance change ,so the potential difference changes