Teaching about strong current

Essential for learning the theory and practice of intensity measurements, shunts are low-level resistances, calibrated with precision to generate a linear voltage drop at their terminals proportional to the intensity passing through them. For example, 100 mV for a 10 A nominal current. This difference in potential can then be measured with a voltmeter, without posing any particular problems.
To obtain a satisfactory measurement, the shunt must be made of a conductive material sized according to the expected current, capable of withstanding occasional massive overloads and with a very low temperature factor. The power dissipated by the Joule effect is proportional to the intensity squared. The increase in temperature in the shunt must not affect measurement accuracy.