Current is the rate of flow of charge, and voltage measures the energy transferred per unit of charge. We can insert these definitions into the equation for power:

Ohm's Law is V = IR, where V = voltage, I = current, and R = resistance. Ohm's Law allows you to determine characteristics of a circuit, such as how much current is flowing through it, if you …

Electric potential & potential difference Learn Intro to potential difference (& voltage) Solved example: Potential difference & work done

Let's learn how to calculate current and voltage across each resistor in a circuit.

We look at the inductor i-v equations and notice how important it is to give inductor current a place to flow. Written by Willy McAllister. The inductor is one of the ideal circuit elements. Let's put …

Kirchhoff's Laws describe current in a node and voltage around a loop. These two laws are the foundation of advanced circuit analysis.

Review the key terms, equations, and skills related to Ohm's law, including how electric potential difference, current, and resistance are related.

A current source produces a constant current, and provides whatever voltage is required. Think about each of these sources connected to a resistor, and use Ohm's Law to figure out the …

A standard practice for labeling current and voltage on resistors, capacitors, and inductors. Labeling voltage and current sources.

When there's a difference in electric potential (voltage), charges move from regions of higher potential to lower potential, converting potential energy into kinetic energy (motion).