In electrical diagrams, how would you identify the function and state of a relay's contacts and coil?

• A. Coil symbol indicates energization; contacts show normally open (NO) or normally closed (NC) state; designation of contact arrangement indicates how path changes when coil is energized.
• B. Coil color indicates voltage rating; contacts show fixed state; designation of contact arrangement indicates mechanical size.
• C. Coil symbol indicates static state; contacts show normally closed; arrangement indicates path unchanged.
• D. Coil is optional; contacts show open only; arrangement indicates colors.

Answer: (A)