An uncharged capacitor is connected to the terminals of a 4.0 v battery, and 9.0 μc flows to the positive plate. the 4.0 v battery is then disconnected and replaced with a 5.0 v battery, with the positive and negative terminals connected in the same manner as before. part a how much additional charge flows to the positive plate? express your answer in microcoulombs.

Explanation:

At the beginning, we have:

V = 4.0 V potential difference across the capacitor

charge stored on the capacitor

Therefore, we can calculate the capacitance of the capacitor:

Later, the battery is replaced with another battery whose voltage is

V = 5.0 V

Since the capacitance of the capacitor does not change, we can calculate the new charge stored:

Since the capacitor has been connected exactly as before, we have that the charge on the positive plate has increased from to . Therefore, the additional charge that moved to the positive plate is

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach