I need a resistance of 200ohms in an environment temperature of 60C.

I need to dissipate 2W and I want a maximum drift 0.2% after 2 000 h. You only can use MR25 resistors out of the E12 range.

Design the minimal resistor(s) setup. (do not use more resistors then needed).

A. Show the calculations B. Explain (short .... A few words, step by step) C. Give the design.

D. What would be the drift after 10 000 h E. What would be the drift after 2 000h if the ambient temperature is 100C