Watch: LEDs, resistors, and motors
LED directionAn LED lights only when connected in the correct direction.
ResistanceA resistor limits current. A higher resistance can make the same LED dimmer.
Motor directionReverse the motor connection and the motor can spin the other way.
Trace the system
User presses switch→Path closes→Components control current→Light or motion changes
When the user ___, the circuit ___, so the motor/LED ___.
Word bank: polarity · direction · resistor · current · input · path · output · status