Measurement Of Low Resistances For Electrical Lab Training Description and Specifications for Lab Tenders
Measurement Of Low Resistances For Electrical Lab Training Workshop.
Principle
The
resistances of various DC conductors are determined by recording the
current / voltage characteristic. The resistivity of metal rods and the
contact resistance of connecting cords are calculated.
Tasks
To plot the current / voltage characteristics of metal rods (copper and aluminium) and to calculate their resistivity.
To determine the resistance of various connecting cords by plotting
their current / voltage characteristics and calculating the contact
resistances.
What you can learn about
Ohm's law
Resistivity
Contact resistance
Conductivity
Four-wire method of measurement