It's wires that connect to different electrical components, like a light bulb, a switch, and a battery. JAMES: Yeah, there are actually two types of circuits. We have series circuits and parallel ...

but it’s a useful safety feature in some electric tools like lawn mowers. They have two switches that both need to be held closed to complete the series circuit, before the lawnmower will work.

CATALOG DESCRIPTION: Fundamental concepts in electrical circuits; circuit analysis and network theorems; linearity and superposition; series/parallel combinations of R, L, and C circuits; sinusoidal ...