Capacitor Circuits: Battery Removal Effects

• Gear300
In summary, the final electric potential of each capacitor in a circuit cannot be generalized to be the same when the battery is removed, regardless of whether the capacitors were in series or parallel. This is illustrated by a circuit with two unequal capacitors in series, as well as the possibility of the capacitors originally being in parallel but with different capacitances.
Gear300
For a circuit of capacitors...can it be generalized that when the battery is removed, each capacitor approaches the same final electric potential, regardless of whether the capacitors were in series or parallel?

Gear300 said:
For a circuit of capacitors...can it be generalized that when the battery is removed, each capacitor approaches the same final electric potential, regardless of whether the capacitors were in series or parallel?

no. consider a circuit with 2 unequal capacitors in series with a battery.

I see, I see...so that's what it comes down to...what happens if the capacitors were originally in parallel to each other and the battery was then removed; the electric potential difference afterwards for each one should still be equal to each other regardless of the capacitance, right?

Last edited:

1. What is a capacitor circuit?

A capacitor circuit is a type of electrical circuit that uses a capacitor to store and release electrical energy. It is commonly used in electronic devices to smooth out voltage fluctuations and filter out unwanted signals.

2. How does a capacitor circuit work?

A capacitor circuit works by storing electrical charge on two conductive plates separated by an insulating material. When a voltage is applied to the circuit, electrons flow from one plate to the other, creating a potential difference. This stored energy can then be released when the circuit is disconnected from the voltage source.

3. What is the effect of removing a battery from a capacitor circuit?

Removing a battery from a capacitor circuit will cause the capacitor to discharge, releasing any stored energy. This can result in a sudden drop in voltage or a surge of current, depending on the circuit's design and the capacity of the capacitor.

4. Can removing a battery from a capacitor circuit be dangerous?

In most cases, removing a battery from a capacitor circuit will not be dangerous. However, if the capacitor is large and holds a significant amount of charge, there is a risk of electric shock. It is always best to discharge a capacitor before handling it or removing it from a circuit.

5. How can the effects of battery removal on a capacitor circuit be mitigated?

The effects of battery removal on a capacitor circuit can be mitigated by using a bleeder resistor. This is a high-value resistor connected in parallel with the capacitor, which allows the stored energy to dissipate slowly. It is also important to follow proper safety precautions and discharge the capacitor before handling it.

• Introductory Physics Homework Help
Replies
20
Views
654
• Introductory Physics Homework Help
Replies
7
Views
606
• Introductory Physics Homework Help
Replies
9
Views
666
• Introductory Physics Homework Help
Replies
5
Views
1K
• Introductory Physics Homework Help
Replies
5
Views
466
• Introductory Physics Homework Help
Replies
4
Views
571
• Introductory Physics Homework Help
Replies
3
Views
1K
• Introductory Physics Homework Help
Replies
6
Views
532
• Introductory Physics Homework Help
Replies
2
Views
1K
• Introductory Physics Homework Help
Replies
6
Views
2K