Calculating Capacitance in Closed Loop Circuits

In summary, capacitance in a closed loop refers to the ability of a closed circuit or system to store electrical energy in the form of an electric charge. It can be calculated by dividing the amount of charge stored in the system by the voltage across the system, or by considering the dielectric constant, plate area, and distance between plates. Some practical applications of capacitance in a closed loop include energy storage, touch screens, and power factor correction. It can affect circuit behavior by storing and releasing energy, filtering frequencies, and causing a phase shift and delay in current. Additionally, capacitance in a closed loop can be changed by adjusting the physical properties of the loop or connecting different capacitors in series or parallel.
  • #1
Jrlinton
134
1

Homework Statement


upload_2017-2-23_13-10-42.png


Homework Equations


C=Δq/V

The Attempt at a Solution


So part a:
The capacitance of 3 should be the difference in charge of b and a divided by the voltage of the circuit?
C3=(14μC-6μC)/12V
=6.67*10-7 F
This was wrong...
 
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  • #2
Jrlinton said:
The capacitance of 3 should be the difference in charge of b and a divided by the voltage of the circuit?
No. You need to divide it by the voltage across C3, which is not same as total voltage in the circuit. Use voltage divider equations for capacitive circuits.
 

FAQ: Calculating Capacitance in Closed Loop Circuits

What is capacitance in a closed loop?

Capacitance in a closed loop refers to the ability of a closed circuit or system to store electrical energy in the form of an electric charge. It is represented by the symbol C and is measured in units of farads (F).

How is capacitance in a closed loop calculated?

The capacitance in a closed loop can be calculated by dividing the amount of charge stored in the system by the voltage across the system. It can also be calculated by multiplying the dielectric constant of the material in the loop by the area of the plates and dividing it by the distance between the plates.

What are some practical applications of capacitance in a closed loop?

Capacitance in a closed loop has various practical applications, such as in capacitors used in electrical circuits for energy storage, in touch screens for sensing touch inputs, in radio frequency filters for tuning and signal processing, and in power factor correction to improve the efficiency of electrical systems.

How does capacitance in a closed loop affect the behavior of a circuit?

The presence of capacitance in a closed loop can affect the behavior of a circuit in several ways. It can store and release electrical energy, filter out certain frequencies, and cause a phase shift in the current. It can also cause a delay in the flow of current, which can affect the timing of signals in a circuit.

Can capacitance in a closed loop be changed?

Yes, the capacitance in a closed loop can be changed by altering the physical properties of the loop, such as the distance between the plates, the area of the plates, and the dielectric material between the plates. It can also be changed by connecting different capacitors in series or parallel within the loop.

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