Question: Assuming that the capacitor in Figure 3 is completely charged and the

Question

Question: Assuming that the capacitor in Figure 3 is completely charged and the switch has just been thrown, closing the circuit as shown; which direction does the current flow (clockwise or counter-clockwise) Justify your answer.

It is important to note for Eq. 1 that when t = 0, I(t = 0) = I0 or I(t = 0) = according to Ohm's law, meaning that the circuit acts as if the capacitor is not even there (shorted) Also important: when t= infinite, I(t= infinite)=0 which, according to Ohm's law, means the voltage across the resistor is now zero, and the voltage across the capacitor is maximum.

Explanation / Answer

current flow will be anticlockwise .

when the capacitor is completely charged, the top plate of the capacitor (as you can see in the figure ) is positive charged, and bottom one is negative charged. when the switch has been thrown, the potential on the top plate is positive and bottom plate is negative. as we know current flows higher potential to lower potential, in this current flows from the positive plate to the negative plate through the resistor which makes the current flow anticlock wise, .

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