http://www.ck12.org Chapter 19. Electrical Circuits
(d) All of them.
(e) None of them.- ammeter:A measuring instrument used to measure the electric current in a circuit.
- voltmeter:An instrument used for measuring electrical potential difference between two points in an electric
circuit.
Series circuits are simple and comparatively inexpensive to design, but require every resistor or device in the circuit
to be functional in order for the rest to work. Parallel circuits are more complex and expensive, but they have
some advantages that may be worth the cost. There are applications for each type of circuit. More commonly,
a combination of both types is used, which can offer capabilities and advantages that neither type can provide
individually. Ammeters and voltmeters are tools used to evaluate the flow of current through a circuit and must be
connected to the circuit appropriately in order to measure the flow without significantly changing it.