Find resistances R2 and R3 in such a way that the power on the resistances (shown by the watt-meter) remains constant when the switch SA1 is opened.
The Attempt at a Solution
I've tried many things already but none have got me anywhere really. I understand that P=I*V which means that when "V" decreases n times, then "I" must increase by n times, but I dont really know what do with it. When the switch is opened, V on R2 ought to be bigger than when it is closed and I ought to be smaller than when the switch is closed.
But thats all I've got. :/
PS. Dont mind the R3=2,45 in the picture. Both R2=R3=?
Thanks in advance,
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