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What are other sources of resistance beyond what Eric Kimberling
introduces in this video?

User Junsu Lee
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Final answer:

Beyond the basic concept of resistance, sources like non-ohmic materials, geometric factors, contact resistance, and temperature variations can contribute to resistance. Additionally, biological systems exhibit unique resistive behaviors due to mechanical asymmetry and active tension generation by molecular motors.

Step-by-step explanation:

In the context of electrical resistance and its origins, which builds upon the concepts introduced by Eric Kimberling, it is important to consider several other sources of resistance that are not necessarily covered in Kimberling's video or the basic physics examples. One major type of resistance not mentioned is the resistance due to non-ohmic materials.

These materials do not follow Ohm's law, meaning their resistance changes with voltage or current. In a wire or any conductive path, if the material exhibits a non-linear current-voltage relationship, it is considered non-ohmic and the resistance cannot be accurately predicted without more complex models.

Another source comes from geometric factors such as the constriction or widening of the conductive path. In real circuits, connections and interfaces between different materials can introduce additional resistance, often referred to as contact resistance.

Additionally, non-uniform temperature distribution can lead to variations in resistance along the conductive path as resistivity is temperature-dependent. Biological systems bring a unique perspective to resistance.

The asymmetry in mechanical response and active tension generation by molecular motors can influence electrical properties, which is relevant in bioelectronics and advanced materials research where the interfaces between biological structures and electronic devices are of interest.

User Viraj Tank
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