10(f). Two lights in series, then the same circuit in parallel

Optional May not apply

This may not apply to you. You have not answered "Requirement 10: which two?" yet. Answer it and this step will either settle or drop off.

With a battery and a switch. Then discuss the differences in the two circuits.

Where this step comes from

Electricity Merit Badge Requirements (Merit Badge Hub, last modified 2026-01-07), Requirement 10(f)