Pull capacitor plates apart A one farad capacitor like the one you used in your

Question

Pull capacitor plates apart A one farad capacitor like the one you used in your experiments is connected to batteries by Nichrome wires and allowed to charge completely (see the figure). (a) Which of the following are true of the system in this state? -The net electric field at any location inside the wire is zero. -There is a current flowing in the circuit. -The fringe field of the capacitor is zero. -The circuit is in equilibrium. (b) Then the plates are suddenly moved farther apart. Which of the following are true about the circuit at a very short time (0.001 s) after the plates are moved apart? -Electrons flow from the negative plate of the capacitor onto the negative end of the battery. -The fringe field of the capacitor is larger in magnitude than it was before the plates were moved. -The system remains in equilibrium. -The net electric field in the wires is zero.

Explanation / Answer

a)

--The net electric field at any location inside the wire is zero.

--The circuit is in equilibrium.

b)

--Electrons flow from the negative plate of the capacitor onto the negative end of the battery.

--The fringe field of the capacitor is larger in magnitude than it was before the plates were moved.

c)

-- There is less charge on the plates of the capacitor than there was initially, before the plates were moved.

-- The circuit is in equilibrium.

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