상황
A 12 V automotive battery supplies two 6 ohm headlight filaments connected in parallel after a common fuse and switch, sharing the battery ground.
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01
Model the battery as B1 with positive rail batt_pos and ground 0
02
Wire both headlight filament resistors to the same switched node so they are in parallel
03
Use a common fuse and SPST switch to represent the headlight circuit control
Use for beginner DC parallel circuit analysis, automotive lighting schematics, or demonstrating equal voltage across parallel branches.