A capacitor Discharging into another capacitor

In summary, after charging two capacitors in series with a 100V cell, there are now electrons on the inside plate of one and the outside plate of the other, resulting in a negative charge of 133micro coulombs on each capacitor. When connected with a resistor, the charge will redistribute to bring both capacitors to the same voltage level. This is because the current will flow from the higher voltage capacitor to the lower voltage capacitor until they reach equilibrium.
  • #1
Jamessamuel
45
0
I have charged two capacitors in series with a 100V cell such that now, there are electrons on the inside plate of one and the outside plate of the other, bunched up so that they incur a negative charge on each capacitor of 133micro coulombs.

Now, they are just connected to one another with a resistor to form a loop. how will the charge redistribute and why? I have been told that 133 micro coulombs would pass through the resistor but i see no reason as to why all the charge on the outer plate of one would just migrate entirely over to the other. The capacitances are 2 and 4 micro farads.

Regards
 
Physics news on Phys.org
  • #2
After charging, charge on each capacitor will be same but voltages across both the capacitors will be different (which of course will add up to 100 V). So,when you connect them, its like two voltage sources in series. Current will flow from higher voltage capacitor to lower voltage capacitor until both are at the same voltage level. So,the charge will redistribute to bring them to equilibrium.
 
Last edited:

1. What is a capacitor discharging into another capacitor?

A capacitor discharging into another capacitor refers to the process of transferring electrical charge from one capacitor to another. This typically occurs when the two capacitors are connected in a circuit, allowing the charge to flow between them.

2. How does this process work?

When two capacitors are connected in a circuit, the capacitor with a higher voltage will discharge its charge to the other capacitor with a lower voltage. This equalizes the voltage between the two capacitors, resulting in a transfer of charge.

3. What is the purpose of this process?

The purpose of discharging one capacitor into another is to transfer electrical energy from one circuit to another. This can be useful in various applications such as power supplies, electric motors, and electronic devices.

4. What factors affect the rate of discharge?

The rate of discharge between two capacitors is affected by several factors, including the capacitance of the capacitors, the voltage difference between them, and the resistance of the circuit. A higher capacitance and voltage difference will result in a faster rate of discharge, while a higher resistance will slow down the process.

5. Are there any safety concerns when working with discharging capacitors?

Yes, there are safety concerns when working with discharging capacitors. Capacitors can hold a significant amount of electrical charge, which can be dangerous if not handled properly. It is important to discharge capacitors safely using appropriate tools and techniques to avoid electrical shock.

Similar threads

  • Electromagnetism
Replies
7
Views
926
Replies
7
Views
1K
Replies
19
Views
3K
  • Introductory Physics Homework Help
Replies
20
Views
396
Replies
101
Views
6K
Replies
4
Views
352
Replies
7
Views
17K
Replies
2
Views
968
Replies
10
Views
2K
Replies
2
Views
2K
Back
Top