We Are Designing An Electric Space Heater To Operate From 120 V.

We are designing an electric space heater to operate from 120 V. Two heating elements with resistances R1 and R2 are to be used that can be operated in parallel, separately, or in series. The highest power is to be 960 watts, and the lowest power is to be 180 watts.Part AWhat values are needed for R1 and R2?Part BWhat intermediate power settings are available?

Originally posted 2018-07-09 20:53:17. Republished by Blog Post Promoter

We Are Designing An Electric Space Heater To Operate From 120 V.

We are designing an electric space heater to operate from 120 V. Two heating elements with resistances R1 and R2 are to be used that can be operated in parallel, separately, or in series. The highest power is to be 960 watts, and the lowest power is to be 180 watts. Part AWhat values are needed for R1 and R2?Part BWhat intermediate power settings are available?

We are designing an electric space heater to operate from 120 V.

Question
We are designing an electric space heater to operate from 120 V. Two heating elements with resistances R1 and R2 are to be used that can be operated in parallel, separately, or in series. The highest power is to be 960 watts, and the lowest power is to be 180 watts.

Part A

What values are needed for R1 and R2?

Part B

What intermediate power settings are available?