Why is my calculated resistance higher than the resistor used

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The calculated total resistance of the circuit is higher than the resistor's labeled value due to additional resistance from the measuring devices and connections. The user measured a 100Ω resistor at 97Ω but calculated total resistances of 114.9Ω and 113.63Ω at different voltage levels. Voltage drops across the resistor were observed, indicating potential issues with the current meter or connections. The discussion highlights the importance of ensuring accurate measurements and considering all components in the circuit, including the effects of the DMM and connections. Further investigation into the setup and measurements is necessary to resolve the discrepancies.
  • #61
gneill said:
Remember when I asked whether or not your DMM had different places to plug the leads into it for different types of readings or ranges? Sometimes it's easy to forget to change or select the right plug positions.
Yeah, now I understand, the wires I used were placed in the right sockets I'm pretty sure.
 

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