What does the dashed line in a schematic usually indicate?

• A. A direct conductor between components.
• B. A power line carrying current.
• C. Ground potential.
• D. An optional, non-physical relationship or shield/ jumper, not a direct connection.

Answer: (D)

Dashed lines in schematics signal a relationship that isn’t a direct electrical conductor. They show how parts are related or grouped without implying that current actually travels along that path. This includes things like shields around cables, optional jumpers or links that can be installed or omitted, or functional relationships between components. So a dashed line communicates an optional or non-physical connection rather than a solid, live wire.