Conductors in a Tube: High Resistance & Low Impedance

In summary, the conversation discusses an oscillating circuit consisting of a charged capacitor and two conductors connected as inductance. When the conductors are shorted, an oscillation is seen on the oscilloscope. However, when iron tubes are placed around the wires, the damping of the oscillation is significantly higher. The series resistance and impedance for both circuits were measured, showing that the resistance is higher when the wires are in the tubes. The impedance is also higher for low frequencies. The question is raised about modifying the tube to maintain high resistance while keeping the impedance low and stable.
  • #1
atijaz
1
0
Hi everybody,

I have an oscillating circuit that consist of a charged capacitor and two conductors connected that can be seen as the inductance. When I short the conductors at their ends an oscillation can be seen on the oscilloscope.
When I put an iron tube around each of the wires the damping of that oscillation is much higher. I measured the series resistance and the series impedance of both circuits. What can be seen ist that the resistance is much higher when the wires are in the tube. The impedance in that case is higher for low frequencies, too.
Is there any way to modify the tube so that we still have the high resistance but to keep the impedance low and stable?

Thank for your help,

atijaz
 
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  • #2
This is a bit confusing. Maybe a better description or drawing?
 

FAQ: Conductors in a Tube: High Resistance & Low Impedance

1. What is the difference between high resistance and low impedance in conductors?

High resistance is a measure of how much a conductor resists the flow of electric current. It is measured in Ohms and is directly proportional to the length and cross-sectional area of the conductor. On the other hand, low impedance refers to how much the conductor allows the flow of electric current. It is also measured in Ohms but is inversely proportional to the length and cross-sectional area of the conductor.

2. Why is high resistance undesirable in conductors?

High resistance can cause a drop in voltage and decrease the amount of current flowing through the conductor. This can result in a loss of energy and can also lead to overheating of the conductor. Additionally, high resistance can cause signal distortion and reduce the efficiency of electrical systems.

3. How does a conductor's material affect its resistance and impedance?

The material of a conductor has a significant impact on its resistance and impedance. Some materials, such as copper and silver, have low resistance and impedance, making them ideal for conducting electricity. Other materials, such as rubber and plastic, have high resistance and impedance, which makes them less suitable for conducting electricity.

4. What role does temperature play in the resistance and impedance of a conductor?

The resistance and impedance of a conductor can increase with an increase in temperature. This is because as temperature rises, the atoms in the conductor vibrate more, causing more collisions with the electrons and hindering the flow of current. This phenomenon is known as the temperature coefficient of resistance and varies depending on the material of the conductor.

5. How can a conductor's resistance and impedance be reduced?

There are several ways to reduce the resistance and impedance of a conductor. One way is to increase the cross-sectional area of the conductor, which decreases resistance and increases impedance. Another way is to use materials with low resistance and impedance, such as copper or silver. Additionally, keeping the conductor at a lower temperature can also help reduce resistance and impedance.

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