Close the switch when the capacitor has stored energy

What happens if a capacitor is closed and let to equilibrium?

The magnitude of energy stored in the capacitor is: E = 1 2 C Δ V 2, so a change in potential difference will cause a change in energy stored. So when the switch is closed and let to equilibrium the resistors will be in series increasing total resistance causing the total current to be less than when it was when the switch was opened.

What happens when a switch is closed?

When the switch is closed, the equilibrium scenario is that there is no current flowing through the branch with the capacitor, but there is current flowing through each resistor. Since R 1 is in series with the R 2 - C parallel combination, it must be that the voltage across the capacitor is given by V C = V B − V 1.

What happens when a battery switch is closed?

My physics teacher said that the answer is B, and explained that after the switch is closed the electrons on the right side of the capacitor will move to the other side of the capacitor, and this current will cancel some of the current coming out of the battery, thus reducing the total energy stored in the capacitor.

What happens when a circuit reaches equilibrium?

The circuit reaches equilibrium. The switch is then closed, and the circuit is allowed to come to a new equilibrium. Which of the following is a true statement about the energy stored in the capacitor after the switch is closed compared with the energy stored in the capacitor before the switch is closed? (A) The energy is greater.

Is it possible to charge a capacitor instantaneously?

As soon we close the switch the capacitor will get charged instantaneously (yes it could lead to I = ∞ at t = 0 but it can be avoided if even a small resistor is placed between capacitor and voltage source. And we can never get the resistance of those wires down to 0 ).

What happens when you close a switch in a circuit?

When you close a switch in a circuit, it allows current to flow in a direct path. This is in contrast to an open switch, which has no continuity and does not allow current to flow. When a switch is closed, it completes the circuit, enabling current to flow.