Because the current varies from wire segment to wire segment along roadway, walkway, or parking lot lighting circuits, the procedure for calculating series voltage drop can be very tedious. Although ...

This circuit contains a 5 Ω resistor in series with two resistors, 6 Ω and 4 Ω, which are in parallel. Start by calculating the combined resistance of the two parallel resistors.

Season 2 Episode 903 | 29m 29s Power and Series Circuits: The electrical power formula is introduced and students learn how to use Ohm’s Law and the power formula to solve problems.

Schematic 2: Series Circuit But what about power? To calculate our power to each loudspeaker, we must first develop a relationship for power. Here are three commonly used equations: P = V * i ; P = ...

Series circuits are convenient because the voltage of the devices cumulates. Adding a second identical 3.6V LED to our earlier example would increase the device voltage to 7.2.

Use Ohms law to relate resistance, current and voltage. In National 5 Physics calculate the resistance for combinations of resistors in series and parallel.