Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
learn:fundamentals:electronic-components:resistor:start [2016/07/25 17:31] – Marthalearn:fundamentals:electronic-components:resistor:start [2022/10/04 11:38] (current) – external edit 127.0.0.1
Line 2: Line 2:
 {{youtube>9GzfrebVg7E?medium}} {{youtube>9GzfrebVg7E?medium}}
  
 +\\
 In the Charge And Charge Motion page, we note that current is the result of transferring electrons from atom to atom in a material. In almost all cases, there is some opposition to the motion of electrons in a material. This results in some loss of energy when transferring charges through a material—in general, this energy loss results from conversion of electrical energy to heat((Yes, there are such things as superconductors which experience no losses when transferring electrons. Those materials are rare enough so that we won't really worry about them here.)). In the Charge And Charge Motion page, we note that current is the result of transferring electrons from atom to atom in a material. In almost all cases, there is some opposition to the motion of electrons in a material. This results in some loss of energy when transferring charges through a material—in general, this energy loss results from conversion of electrical energy to heat((Yes, there are such things as superconductors which experience no losses when transferring electrons. Those materials are rare enough so that we won't really worry about them here.)).
 +
 +\\
 +<html>
 +<a href="/learn/fundamentals/circuits/charge-and-charge-motion/start" class="btn btn-success" role="button">Charge and Charge Motion</a>
 +</html>
 +\\
  
 Resistance characterizes the loss of energy associated with passing an electrical current through a conductive element. Units of resistance are volts per ampere, or Ohms, and are represented by the Greek symbol Ω. A high resistance corresponds to a large energy loss associated with current passage through a material, while low resistance corresponds to small energy loss associated with current passage through a material. As extreme examples, perfect conductors have zero resistance and perfect insulators have infinite resistance. Resistance characterizes the loss of energy associated with passing an electrical current through a conductive element. Units of resistance are volts per ampere, or Ohms, and are represented by the Greek symbol Ω. A high resistance corresponds to a large energy loss associated with current passage through a material, while low resistance corresponds to small energy loss associated with current passage through a material. As extreme examples, perfect conductors have zero resistance and perfect insulators have infinite resistance.