The mathematics collections contain about twenty parallel rules and combination instruments, dating from the late 18th century to the late 20th century and ranging in length from 6 to 24 inches. The ...

Complex circuits may have some resistors connected in series, and some connected in parallel. For example, the following combination of resistors shows two resistors connected in series ...

In this circuit the following applies. When resistors are connected in parallel, the supply current is equal to the sum of the currents through each resistor. The currents in the branches of a ...