Principle
In this experiment, self-induction is investigated - a property of coils in which a voltage is generated by changing the current. This counteracts the change in current and leads to a time delay when switching on and off.
Tasks
What effect does a coil have when closing a DC circuit? Investigate the voltage across a resistor connected in series with a coil.
What you can learn about
The aim of the experiment is to learn that when a coil is switched on, a self-induction voltage is created which counteracts the increase in current.