b) What happens to the number of electrons on the negative plate when the switch
ID: 1520285 • Letter: B
Question
b) What happens to the number of electrons on the negative plate when the switch is closed? on the positive plate?
c) If the number of electrons on a plate changes, where do the excess electrons come from/go to?
2) When the capacitor is fully charged the switch is opened. What happens to the electrons stored on the capacitor’s negative plate?
3) Which electron is expelled from the negative plate more forcefully: the first one to leave or the ten thousandth? Explain why.
0 Rm Figure 1: A basic RC circuit. The voltmeter is contained within the dotted box and Rm-10 11 is its internal resistance.Explanation / Answer
a) after switch is closed,the voltage across the capacitor increases with time.
b)after closing the switch,the charge in the capacitor increases with time.so,the number of electrons on the negative plate increases and decreases in positive plate.
c)the execess electrons comes from source.
2.when switch is open.after capacitor is fully charged the number of electrons on the negative plate of capacitor decreases.
3)the charge on the capacitor decays exponentially with time.so the first electron leaves with forcefully compared toten thousand electron.
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