If one of the lights in the Christmas tree garland burns out, will the others burn? Why?

If the bulbs are connected in series, then the burned out bulb will interrupt the circuit and the rest will not be a handful.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.