Continuity and measuring resistance.

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SUMMARY

The discussion centers on the issue of measuring resistance and continuity in a coil using a multimeter. The user measured a resistance of approximately 80 ohms but encountered an open circuit when testing for continuity. This discrepancy suggests potential issues with the multimeter, such as low battery power or malfunction. The conversation emphasizes the importance of verifying the multimeter's functionality by testing known resistances.

PREREQUISITES
  • Understanding of electrical resistance and continuity
  • Familiarity with multimeter usage
  • Basic knowledge of circuit theory
  • Experience with troubleshooting electrical components
NEXT STEPS
  • Test the multimeter with a known resistor to verify functionality
  • Research common multimeter issues and troubleshooting techniques
  • Learn about the principles of continuity testing in electrical circuits
  • Explore the characteristics of coils and their behavior in circuits
USEFUL FOR

This discussion is beneficial for electronics students, hobbyists working with circuits, and anyone involved in troubleshooting electrical components and devices.

pyroknife
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This question is for a project I'm doing for my circuits class.

I'm trying to diagnose a problem. Basically I got this coil. I measured the resistance of the coil by connecting the ends of my multimeter to the uncoated ends of the coil. I got a resistance value.
However, when I tried checking for continuity of the coil from the 2 ends, it shows up as an open circuit.

My question is is it possible to have a noticeable resistance from a coil, but no continuity?

My understanding is that with no continuity, you have an open circuit. An open circuit is basically infinite resistance, but the resistance I measured was about 80 ohms.
 
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pyroknife said:
This question is for a project I'm doing for my circuits class.

I'm trying to diagnose a problem. Basically I got this coil. I measured the resistance of the coil by connecting the ends of my multimeter to the uncoated ends of the coil. I got a resistance value.
However, when I tried checking for continuity of the coil from the 2 ends, it shows up as an open circuit.

My question is is it possible to have a noticeable resistance from a coil, but no continuity?

My understanding is that with no continuity, you have an open circuit. An open circuit is basically infinite resistance, but the resistance I measured was about 80 ohms.

Sounds like your meter has a problem. Are the batteries fresh? What was the resistance value? If you connect the same value resistor to your meter, what does the continuity reading indicate?
 

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