Two different capacitors in the microfarad range. Two different inductors in the millihenry range. A multimeter, an capacitance meter, and an inductance meter. Several connecting leads with alligator clips. There is a good analogy between hydraulic systems and electrical circuits, so let us start with a discussion of water flowing through pipes.
Pressure is the driving force that causes the water to move through the pipes.
The large water tanks high above the ground that are visible in most cities produce the water pressure. When you open a faucet, the volume of water that emerges per second, or the flow rate measured in units such as gallons per minute or cubic meters per second, is directly related to the pressure. The larger the pressure, the larger the flow rate. However, the flow rate reduces if the water has to flow through a long pipe and especially if it is a narrow pipe. This causes resistance to flow.