CAT NO: DIDACTICNLE-Export-048002
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