to, because we want to run through them very little power to tire as little as possible to the stack, because in reality, energy is spent for no other reason being to get the 5 volts with a tensioned divider , n. You told me it was a problem that your resistances were underpowered. However, as the load impedance will not be parallel with R2, will not have problems without further voltage divider. May be because, little by power, but stress that it is advisable that they be of high value.
The operational power, although this is not taught in college, is not always necessarily be symmetrical.
