Instantaneous Values
An ac sine wave has a characteristic shape, as shown in following figure. This is […]
Phase
Instantaneous Rate of Change
A sine wave with a period of 1 second. It thus has a frequency of […]
Circles and Vectors
An ac sine wave represents the most efficient possible way that an electrical quantity can […]
Rotating Vectors
A circle has 360°. A sine wave can be represented as circular motion. Points along […]
Expressions of Phase Difference
The phase difference, also called the phase angle, between two waves can have meaning only […]
Vector Diagrams of Phase Difference
Vector representations of phase difference. At A, waves X and Y are in phase. At […]