In the circuit 'B' of the illustration, what would be the result of the upper heating element being burned out and open circuited? Illustration EL-0041

Correct Answer: Option A — low heat (series) position would result in no heat at allmedium heat (single) position would result in no heat at allhigh heat (parallel) position would result in medium heat

Multi-element galley heaters rely on series and parallel circuit switching for varied heat outputs. An open-circuited upper heating element breaks the current path during series (low) operation, yields zero continuity for single operation, and leaves only the lower element functioning during parallel high settings.