In a DC circuit with a non-polarized capacitor and a resistor, the current is at

Question

In a DC circuit with a non-polarized capacitor and a resistor, the current is at a maximum when the circuit is first connected. The current slowly decreases as the charge and potential difference on the capacitor increases.

What would happen to the current if we let the capacitor charge for a little bit, say one time constant, and then switch the polarity of the battery and leave it connected for a long time? Would the current increase, decrease, change direction, some combination of these?

What will the current do if you have a fully charged capacitor in a circuit and then you switch the polarity of the battery and leave it connected for a long time? Will the current increase, decrease, change direction, some combination of these?

Explanation / Answer

On swithcing off the battery, initially the current will change direction.Then it will slowly decrease to zero.

The current will change direction and become zero if the battery is stronger than the capacitor. Else, the current will decrease in magnitude suddenly and then go to zero finally

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