What Is the Pulse Delay Time for a 20-Foot Coax Cable?

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Electrical pulses in coax cables travel at approximately half the speed of light, which is about 2/3 the speed of light in standard BNC cables. To calculate the pulse delay time for a 20-foot coax cable, the relationship between speed, distance, and time can be applied using the formula speed = distance/time. By rearranging this formula, the pulse delay time can be determined. The discussion confirms that the term "pulse delay time" refers specifically to the time it takes for the pulse to travel the given distance. Understanding these principles is essential for solving the problem accurately.
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Homework Statement



Electrical pulses travel at about half of light speed through coax cables. Determine the pulse delay time for a cable with a length of 20 feet.



Homework Equations





The Attempt at a Solution



I don't think this question is very hard, but I can't find any relevant information in my notes, and our book is just a lab manual. Thanks in advance.
 
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How are speed, distance traveled, and time related? (Don't think too hard about this.)
 
Well speed=distance/time. I could use the speed and distance to find the time. Is that all "pulse delay time" refers to?
 
Yes, that is all there is to it. :smile:

BTW, I have found that electric signals travel about 2/3 c along standard BNC coax cables. But of course, you should use the speed given in the problem statement.
 
Wow. Ok, thanks a lot.
 

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